QuAM Channels API

Channel

Bases: QuamComponent, ABC

Base QuAM component for a channel, can be output, input or both.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
sticky	Sticky	Optional sticky parameters for the channel, i.e. defining whether successive pulses are applied w.r.t the previous pulse or w.r.t 0 V. If not specified, this channel is not sticky.	required

Source code in quam/components/channels.py

@quam_dataclass
class Channel(QuamComponent, ABC):
    """Base QuAM component for a channel, can be output, input or both.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        sticky (Sticky): Optional sticky parameters for the channel, i.e. defining
            whether successive pulses are applied w.r.t the previous pulse or w.r.t 0 V.
            If not specified, this channel is not sticky.
    """

    operations: Dict[str, Pulse] = field(default_factory=dict)

    id: Union[str, int] = None
    _default_label: ClassVar[str] = "ch"  # Used to determine name from id

    digital_outputs: Dict[str, DigitalOutputChannel] = field(default_factory=dict)
    sticky: Optional[StickyChannelAddon] = None

    intermediate_frequency: Optional[float] = None
    thread: Optional[str] = None

    @property
    def name(self) -> str:
        cls_name = self.__class__.__name__

        if self.id is not None:
            if str_ref.is_reference(self.id):
                raise AttributeError(
                    f"{cls_name}.name cannot be determined. "
                    f"Please either set {cls_name}.id to a string or integer, "
                    f"or {cls_name} should be an attribute of another QuAM component."
                )
            if isinstance(self.id, str):
                return self.id
            else:
                return f"{self._default_label}{self.id}"
        if self.parent is None:
            raise AttributeError(
                f"{cls_name}.name cannot be determined. "
                f"Please either set {cls_name}.id to a string or integer, "
                f"or {cls_name} should be an attribute of another QuAM component with "
                "a name."
            )
        if isinstance(self.parent, QuamDict):
            return self.parent.get_attr_name(self)
        if not hasattr(self.parent, "name"):
            raise AttributeError(
                f"{cls_name}.name cannot be determined. "
                f"Please either set {cls_name}.id to a string or integer, "
                f"or {cls_name} should be an attribute of another QuAM component with "
                "a name."
            )
        return f"{self.parent.name}{str_ref.DELIMITER}{self.parent.get_attr_name(self)}"

    @property
    def pulse_mapping(self):
        return {label: pulse.pulse_name for label, pulse in self.operations.items()}

    def play(
        self,
        pulse_name: str,
        amplitude_scale: Union[float, AmpValuesType] = None,
        duration: QuaNumberType = None,
        condition: QuaExpressionType = None,
        chirp: ChirpType = None,
        truncate: QuaNumberType = None,
        timestamp_stream: StreamType = None,
        continue_chirp: bool = False,
        target: str = "",
        validate: bool = True,
    ):
        """Play a pulse on this channel.

        Args:
            pulse_name (str): The name of the pulse to play. Should be registered in
                `self.operations`.
            amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
                Can be either a float, or qua.amp(float).
            duration (int): Duration of the pulse in units of the clock cycle (4ns).
                If not provided, the default pulse duration will be used. It is possible
                to dynamically change the duration of both constant and arbitrary
                pulses. Arbitrary pulses can only be stretched, not compressed.
            chirp (Union[(list[int], str), (int, str)]): Allows to perform
                piecewise linear sweep of the element's intermediate
                frequency in time. Input should be a tuple, with the 1st
                element being a list of rates and the second should be a
                string with the units. The units can be either: 'Hz/nsec',
                'mHz/nsec', 'uHz/nsec', 'pHz/nsec' or 'GHz/sec', 'MHz/sec',
                'KHz/sec', 'Hz/sec', 'mHz/sec'.
            truncate (Union[int, QUA variable of type int]): Allows playing
                only part of the pulse, truncating the end. If provided,
                will play only up to the given time in units of the clock
                cycle (4ns).
            condition (A logical expression to evaluate.): Will play analog
                pulse only if the condition's value is true. Any digital
                pulses associated with the operation will always play.
            timestamp_stream (Union[str, _ResultSource]): (Supported from
                QOP 2.2) Adding a `timestamp_stream` argument will save the
                time at which the operation occurred to a stream. If the
                `timestamp_stream` is a string ``label``, then the timestamp
                handle can be retrieved with
                `qm._results.JobResults.get` with the same ``label``.
            validate (bool): If True (default), validate that the pulse is registered
                in Channel.operations

        Note:
            The `element` argument from `qm.qua.play()`is not needed, as it is
            automatically set to `self.name`.

        """
        if validate and pulse_name not in self.operations:
            raise KeyError(
                f"Operation '{pulse_name}' not found in channel '{self.name}'"
            )

        if amplitude_scale is not None:
            if not isinstance(amplitude_scale, _PulseAmp):
                amplitude_scale = amp(amplitude_scale)
            pulse = pulse_name * amplitude_scale
        else:
            pulse = pulse_name

        # At the moment, self.name is not defined for Channel because it could
        # be a property or dataclass field in a subclass.
        # # TODO Find elegant solution for Channel.name.
        play(
            pulse=pulse,
            element=self.name,
            duration=duration,
            condition=condition,
            chirp=chirp,
            truncate=truncate,
            timestamp_stream=timestamp_stream,
            continue_chirp=continue_chirp,
            target=target,
        )

    def wait(self, duration: QuaNumberType, *other_elements: Union[str, "Channel"]):
        """Wait for the given duration on all provided elements without outputting anything.

        Duration is in units of the clock cycle (4ns)

        Args:
            duration (Union[int,QUA variable of type int]): time to wait in
                units of the clock cycle (4ns). Range: [4, $2^{31}-1$]
                in steps of 1.
            *other_elements (Union[str,sequence of str]): elements to wait on,
                in addition to this channel

        Warning:
            In case the value of this is outside the range above, unexpected results may occur.

        Note:
            The current channel element is always included in the wait operation.

        Note:
            The purpose of the `wait` operation is to add latency. In most cases, the
            latency added will be exactly the same as that specified by the QUA variable or
            the literal used. However, in some cases an additional computational latency may
            be added. If the actual wait time has significance, such as in characterization
            experiments, the actual wait time should always be verified with a simulator.
        """
        other_elements_str = [
            element if isinstance(element, str) else str(element)
            for element in other_elements
        ]
        wait(duration, self.name, *other_elements_str)

    def align(self, *other_elements):
        if not other_elements:
            align()
        else:
            other_elements_str = [
                element if isinstance(element, str) else str(element)
                for element in other_elements
            ]
            align(self.name, *other_elements_str)

    def update_frequency(
        self,
        new_frequency: QuaNumberType,
        units: str = "Hz",
        keep_phase: bool = False,
    ):
        """Dynamically update the frequency of the associated oscillator.

        This changes the frequency from the value defined in the channel.

        The behavior of the phase (continuous vs. coherent) is controlled by the
        ``keep_phase`` parameter and is discussed in the documentation.

        Args:
            new_frequency (int): The new frequency value to set in units set
                by ``units`` parameter. In steps of 1.
            units (str): units of new frequency. Useful when sub-Hz
                precision is required. Allowed units are "Hz", "mHz", "uHz",
                "nHz", "pHz"
            keep_phase (bool): Determine whether phase will be continuous
                through the change (if ``True``) or it will be coherent,
                only the frequency will change (if ``False``).

        Example:
            ```python
            with program() as prog:
                update_frequency("q1", 4e6) # will set the frequency to 4 MHz

                ### Example for sub-Hz resolution
                # will set the frequency to 100 Hz (due to casting to int)
                update_frequency("q1", 100.7)

                # will set the frequency to 100.7 Hz
                update_frequency("q1", 100700, units='mHz')
            ```
        """
        update_frequency(self.name, new_frequency, units, keep_phase)

    def frame_rotation(self, angle: QuaNumberType):
        r"""Shift the phase of the channel element's oscillator by the given angle.

        This is typically used for virtual z-rotations.

        Note:
            The fixed point format of QUA variables of type fixed is 4.28, meaning the
            phase must be between $-8$ and $8-2^{28}$. Otherwise the phase value will be
            invalid. It is therefore better to use `frame_rotation_2pi()` which avoids
            this issue.

        Note:
            The phase is accumulated with a resolution of 16 bit.
            Therefore, *N* changes to the phase can result in a phase (and amplitude)
            inaccuracy of about :math:`N \cdot 2^{-16}`. To null out this accumulated
            error, it is recommended to use `reset_frame(el)` from time to time.

        Args:
            angle (Union[float, QUA variable of type fixed]): The angle to
                add to the current phase (in radians)
            *elements (str): a single element whose oscillator's phase will
                be shifted. multiple elements can be given, in which case
                all of their oscillators' phases will be shifted

        """
        frame_rotation(angle, self.name)

    def frame_rotation_2pi(self, angle: QuaNumberType):
        r"""Shift the phase of the oscillator associated with an element by the given
        angle in units of 2pi radians.

        This is typically used for virtual z-rotations.

        Note:
            Unlike the case of frame_rotation(), this method performs the 2-pi radian
            wrap around of the angle automatically.

        Note:
            The phase is accumulated with a resolution of 16 bit.
            Therefore, *N* changes to the phase can result in a phase inaccuracy of
            about :math:`N \cdot 2^{-16}`. To null out this accumulated error, it is
            recommended to use `reset_frame(el)` from time to time.

        Args:
            angle (Union[float,QUA variable of type real]): The angle to add
                to the current phase (in $2\pi$ radians)
        """
        frame_rotation_2pi(angle, self.name)

    def _config_add_digital_outputs(self, config: Dict[str, dict]) -> None:
        """Adds the digital outputs to the QUA config.

        config.elements.<element_name>.digitalInputs will be updated with the digital
        outputs of this channel.

        Note that the digital outputs are added separately to the controller config in
        `DigitalOutputChannel.apply_to_config`.

        Args:
            config (dict): The QUA config that's in the process of being generated.
        """
        if not self.digital_outputs:
            return

        element_config = config["elements"][self.name]
        element_config.setdefault("digitalInputs", {})

        for name, digital_output in self.digital_outputs.items():
            digital_cfg = digital_output.generate_element_config()
            element_config["digitalInputs"][name] = digital_cfg

    def apply_to_config(self, config: Dict[str, dict]) -> None:
        """Adds this Channel to the QUA configuration.

        config.elements.<element_name> will be created, and the operations are added.

        Args:
            config (dict): The QUA config that's in the process of being generated.

        Raises:
            ValueError: If the channel already exists in the config.
        """
        if self.name in config["elements"]:
            raise ValueError(
                f"Cannot add channel '{self.name}' to the config because it already "
                f"exists. Existing entry: {config['elements'][self.name]}"
            )
        config["elements"][self.name] = {"operations": self.pulse_mapping}
        element_config = config["elements"][self.name]

        if self.intermediate_frequency is not None:
            element_config["intermediate_frequency"] = self.intermediate_frequency

        if self.thread is not None:
            element_config["thread"] = self.thread

        self._config_add_digital_outputs(config)

apply_to_config(config)

Adds this Channel to the QUA configuration.

config.elements. will be created, and the operations are added.

Parameters:

Name	Type	Description	Default
config	dict	The QUA config that's in the process of being generated.	required

Raises:

Type	Description
ValueError	If the channel already exists in the config.

Source code in quam/components/channels.py

def apply_to_config(self, config: Dict[str, dict]) -> None:
    """Adds this Channel to the QUA configuration.

    config.elements.<element_name> will be created, and the operations are added.

    Args:
        config (dict): The QUA config that's in the process of being generated.

    Raises:
        ValueError: If the channel already exists in the config.
    """
    if self.name in config["elements"]:
        raise ValueError(
            f"Cannot add channel '{self.name}' to the config because it already "
            f"exists. Existing entry: {config['elements'][self.name]}"
        )
    config["elements"][self.name] = {"operations": self.pulse_mapping}
    element_config = config["elements"][self.name]

    if self.intermediate_frequency is not None:
        element_config["intermediate_frequency"] = self.intermediate_frequency

    if self.thread is not None:
        element_config["thread"] = self.thread

    self._config_add_digital_outputs(config)

frame_rotation(angle)

Shift the phase of the channel element's oscillator by the given angle.

This is typically used for virtual z-rotations.

Note

The fixed point format of QUA variables of type fixed is 4.28, meaning the phase must be between $-8$ and $8-2^{28}$. Otherwise the phase value will be invalid. It is therefore better to use frame_rotation_2pi() which avoids this issue.

Note

The phase is accumulated with a resolution of 16 bit. Therefore, N changes to the phase can result in a phase (and amplitude) inaccuracy of about :math:N \cdot 2^{-16}. To null out this accumulated error, it is recommended to use reset_frame(el) from time to time.

Parameters:

Name	Type	Description	Default
angle	Union[float, QUA variable of type fixed]	The angle to add to the current phase (in radians)	required
*elements	str	a single element whose oscillator's phase will be shifted. multiple elements can be given, in which case all of their oscillators' phases will be shifted	required

Source code in quam/components/channels.py

def frame_rotation(self, angle: QuaNumberType):
    r"""Shift the phase of the channel element's oscillator by the given angle.

    This is typically used for virtual z-rotations.

    Note:
        The fixed point format of QUA variables of type fixed is 4.28, meaning the
        phase must be between $-8$ and $8-2^{28}$. Otherwise the phase value will be
        invalid. It is therefore better to use `frame_rotation_2pi()` which avoids
        this issue.

    Note:
        The phase is accumulated with a resolution of 16 bit.
        Therefore, *N* changes to the phase can result in a phase (and amplitude)
        inaccuracy of about :math:`N \cdot 2^{-16}`. To null out this accumulated
        error, it is recommended to use `reset_frame(el)` from time to time.

    Args:
        angle (Union[float, QUA variable of type fixed]): The angle to
            add to the current phase (in radians)
        *elements (str): a single element whose oscillator's phase will
            be shifted. multiple elements can be given, in which case
            all of their oscillators' phases will be shifted

    """
    frame_rotation(angle, self.name)

frame_rotation_2pi(angle)

Shift the phase of the oscillator associated with an element by the given angle in units of 2pi radians.

This is typically used for virtual z-rotations.

Note

Unlike the case of frame_rotation(), this method performs the 2-pi radian wrap around of the angle automatically.

Note

The phase is accumulated with a resolution of 16 bit. Therefore, N changes to the phase can result in a phase inaccuracy of about :math:N \cdot 2^{-16}. To null out this accumulated error, it is recommended to use reset_frame(el) from time to time.

Parameters:

Name	Type	Description	Default
angle	Union[float,QUA variable of type real]	The angle to add to the current phase (in $2\pi$ radians)	required

Source code in quam/components/channels.py

def frame_rotation_2pi(self, angle: QuaNumberType):
    r"""Shift the phase of the oscillator associated with an element by the given
    angle in units of 2pi radians.

    This is typically used for virtual z-rotations.

    Note:
        Unlike the case of frame_rotation(), this method performs the 2-pi radian
        wrap around of the angle automatically.

    Note:
        The phase is accumulated with a resolution of 16 bit.
        Therefore, *N* changes to the phase can result in a phase inaccuracy of
        about :math:`N \cdot 2^{-16}`. To null out this accumulated error, it is
        recommended to use `reset_frame(el)` from time to time.

    Args:
        angle (Union[float,QUA variable of type real]): The angle to add
            to the current phase (in $2\pi$ radians)
    """
    frame_rotation_2pi(angle, self.name)

play(pulse_name, amplitude_scale=None, duration=None, condition=None, chirp=None, truncate=None, timestamp_stream=None, continue_chirp=False, target='', validate=True)

Play a pulse on this channel.

Parameters:

Name	Type	Description	Default
pulse_name	str	The name of the pulse to play. Should be registered in self.operations.	required
amplitude_scale	(float, _PulseAmp)	Amplitude scale of the pulse. Can be either a float, or qua.amp(float).	None
duration	int	Duration of the pulse in units of the clock cycle (4ns). If not provided, the default pulse duration will be used. It is possible to dynamically change the duration of both constant and arbitrary pulses. Arbitrary pulses can only be stretched, not compressed.	None
chirp	Union[(list[int], str), (int, str)]	Allows to perform piecewise linear sweep of the element's intermediate frequency in time. Input should be a tuple, with the 1st element being a list of rates and the second should be a string with the units. The units can be either: 'Hz/nsec', 'mHz/nsec', 'uHz/nsec', 'pHz/nsec' or 'GHz/sec', 'MHz/sec', 'KHz/sec', 'Hz/sec', 'mHz/sec'.	None
truncate	Union[int, QUA variable of type int]	Allows playing only part of the pulse, truncating the end. If provided, will play only up to the given time in units of the clock cycle (4ns).	None
condition	A logical expression to evaluate.	Will play analog pulse only if the condition's value is true. Any digital pulses associated with the operation will always play.	None
timestamp_stream	Union[str, _ResultSource]	(Supported from QOP 2.2) Adding a timestamp_stream argument will save the time at which the operation occurred to a stream. If the timestamp_stream is a string label, then the timestamp handle can be retrieved with qm._results.JobResults.get with the same label.	None
validate	bool	If True (default), validate that the pulse is registered in Channel.operations	True

Note

The element argument from qm.qua.play()is not needed, as it is automatically set to self.name.

Source code in quam/components/channels.py

def play(
    self,
    pulse_name: str,
    amplitude_scale: Union[float, AmpValuesType] = None,
    duration: QuaNumberType = None,
    condition: QuaExpressionType = None,
    chirp: ChirpType = None,
    truncate: QuaNumberType = None,
    timestamp_stream: StreamType = None,
    continue_chirp: bool = False,
    target: str = "",
    validate: bool = True,
):
    """Play a pulse on this channel.

    Args:
        pulse_name (str): The name of the pulse to play. Should be registered in
            `self.operations`.
        amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
            Can be either a float, or qua.amp(float).
        duration (int): Duration of the pulse in units of the clock cycle (4ns).
            If not provided, the default pulse duration will be used. It is possible
            to dynamically change the duration of both constant and arbitrary
            pulses. Arbitrary pulses can only be stretched, not compressed.
        chirp (Union[(list[int], str), (int, str)]): Allows to perform
            piecewise linear sweep of the element's intermediate
            frequency in time. Input should be a tuple, with the 1st
            element being a list of rates and the second should be a
            string with the units. The units can be either: 'Hz/nsec',
            'mHz/nsec', 'uHz/nsec', 'pHz/nsec' or 'GHz/sec', 'MHz/sec',
            'KHz/sec', 'Hz/sec', 'mHz/sec'.
        truncate (Union[int, QUA variable of type int]): Allows playing
            only part of the pulse, truncating the end. If provided,
            will play only up to the given time in units of the clock
            cycle (4ns).
        condition (A logical expression to evaluate.): Will play analog
            pulse only if the condition's value is true. Any digital
            pulses associated with the operation will always play.
        timestamp_stream (Union[str, _ResultSource]): (Supported from
            QOP 2.2) Adding a `timestamp_stream` argument will save the
            time at which the operation occurred to a stream. If the
            `timestamp_stream` is a string ``label``, then the timestamp
            handle can be retrieved with
            `qm._results.JobResults.get` with the same ``label``.
        validate (bool): If True (default), validate that the pulse is registered
            in Channel.operations

    Note:
        The `element` argument from `qm.qua.play()`is not needed, as it is
        automatically set to `self.name`.

    """
    if validate and pulse_name not in self.operations:
        raise KeyError(
            f"Operation '{pulse_name}' not found in channel '{self.name}'"
        )

    if amplitude_scale is not None:
        if not isinstance(amplitude_scale, _PulseAmp):
            amplitude_scale = amp(amplitude_scale)
        pulse = pulse_name * amplitude_scale
    else:
        pulse = pulse_name

    # At the moment, self.name is not defined for Channel because it could
    # be a property or dataclass field in a subclass.
    # # TODO Find elegant solution for Channel.name.
    play(
        pulse=pulse,
        element=self.name,
        duration=duration,
        condition=condition,
        chirp=chirp,
        truncate=truncate,
        timestamp_stream=timestamp_stream,
        continue_chirp=continue_chirp,
        target=target,
    )

update_frequency(new_frequency, units='Hz', keep_phase=False)

Dynamically update the frequency of the associated oscillator.

This changes the frequency from the value defined in the channel.

The behavior of the phase (continuous vs. coherent) is controlled by the keep_phase parameter and is discussed in the documentation.

Parameters:

Name	Type	Description	Default
new_frequency	int	The new frequency value to set in units set by units parameter. In steps of 1.	required
units	str	units of new frequency. Useful when sub-Hz precision is required. Allowed units are "Hz", "mHz", "uHz", "nHz", "pHz"	'Hz'
keep_phase	bool	Determine whether phase will be continuous through the change (if True) or it will be coherent, only the frequency will change (if False).	False

Example

with program() as prog:
    update_frequency("q1", 4e6) # will set the frequency to 4 MHz

    ### Example for sub-Hz resolution
    # will set the frequency to 100 Hz (due to casting to int)
    update_frequency("q1", 100.7)

    # will set the frequency to 100.7 Hz
    update_frequency("q1", 100700, units='mHz')

Source code in quam/components/channels.py

def update_frequency(
    self,
    new_frequency: QuaNumberType,
    units: str = "Hz",
    keep_phase: bool = False,
):
    """Dynamically update the frequency of the associated oscillator.

    This changes the frequency from the value defined in the channel.

    The behavior of the phase (continuous vs. coherent) is controlled by the
    ``keep_phase`` parameter and is discussed in the documentation.

    Args:
        new_frequency (int): The new frequency value to set in units set
            by ``units`` parameter. In steps of 1.
        units (str): units of new frequency. Useful when sub-Hz
            precision is required. Allowed units are "Hz", "mHz", "uHz",
            "nHz", "pHz"
        keep_phase (bool): Determine whether phase will be continuous
            through the change (if ``True``) or it will be coherent,
            only the frequency will change (if ``False``).

    Example:
        ```python
        with program() as prog:
            update_frequency("q1", 4e6) # will set the frequency to 4 MHz

            ### Example for sub-Hz resolution
            # will set the frequency to 100 Hz (due to casting to int)
            update_frequency("q1", 100.7)

            # will set the frequency to 100.7 Hz
            update_frequency("q1", 100700, units='mHz')
        ```
    """
    update_frequency(self.name, new_frequency, units, keep_phase)

wait(duration, *other_elements)

Wait for the given duration on all provided elements without outputting anything.

Duration is in units of the clock cycle (4ns)

Parameters:

Name	Type	Description	Default
duration	Union[int,QUA variable of type int]	time to wait in units of the clock cycle (4ns). Range: [4, $2^{31}-1$] in steps of 1.	required
*other_elements	Union[str,sequence of str]	elements to wait on, in addition to this channel	()

Warning

In case the value of this is outside the range above, unexpected results may occur.

Note

The current channel element is always included in the wait operation.

Note

The purpose of the wait operation is to add latency. In most cases, the latency added will be exactly the same as that specified by the QUA variable or the literal used. However, in some cases an additional computational latency may be added. If the actual wait time has significance, such as in characterization experiments, the actual wait time should always be verified with a simulator.

Source code in quam/components/channels.py

def wait(self, duration: QuaNumberType, *other_elements: Union[str, "Channel"]):
    """Wait for the given duration on all provided elements without outputting anything.

    Duration is in units of the clock cycle (4ns)

    Args:
        duration (Union[int,QUA variable of type int]): time to wait in
            units of the clock cycle (4ns). Range: [4, $2^{31}-1$]
            in steps of 1.
        *other_elements (Union[str,sequence of str]): elements to wait on,
            in addition to this channel

    Warning:
        In case the value of this is outside the range above, unexpected results may occur.

    Note:
        The current channel element is always included in the wait operation.

    Note:
        The purpose of the `wait` operation is to add latency. In most cases, the
        latency added will be exactly the same as that specified by the QUA variable or
        the literal used. However, in some cases an additional computational latency may
        be added. If the actual wait time has significance, such as in characterization
        experiments, the actual wait time should always be verified with a simulator.
    """
    other_elements_str = [
        element if isinstance(element, str) else str(element)
        for element in other_elements
    ]
    wait(duration, self.name, *other_elements_str)

DigitalOutputChannel

Bases: QuamComponent

QuAM component for a digital output channel (signal going out of the OPX)

Should be added to Channel.digital_outputs so that it's also added to the respective element in the QUA config.

Parameters:

Name	Type	Description	Default
opx_output	Tuple[str, int]	Channel output port from the OPX perspective, E.g. ("con1", 1)	required
delay	int	Delay in nanoseconds. An intrinsic negative delay of 136 ns exists by default.	required
buffer	int	Digital pulses played to this element will be convolved with a digital pulse of value 1 with this length [ns].	required
shareable	bool	If True, the digital output can be shared with other QM instances. Default is False	required
inverted	bool	If True, the digital output is inverted. Default is False.	required

.

Source code in quam/components/channels.py

@quam_dataclass
class DigitalOutputChannel(QuamComponent):
    """QuAM component for a digital output channel (signal going out of the OPX)

    Should be added to `Channel.digital_outputs` so that it's also added to the
    respective element in the QUA config.

    Args:
        opx_output (Tuple[str, int]): Channel output port from the OPX perspective,
            E.g. ("con1", 1)
        delay (int, optional): Delay in nanoseconds. An intrinsic negative delay of
            136 ns exists by default.
        buffer (int, optional): Digital pulses played to this element will be convolved
            with a digital pulse of value 1 with this length [ns].
        shareable (bool, optional): If True, the digital output can be shared with other
            QM instances. Default is False
        inverted (bool, optional): If True, the digital output is inverted.
            Default is False.
    ."""

    opx_output: Union[Tuple[str, int], Tuple[str, int, int], DigitalOutputPort]
    delay: int = None
    buffer: int = None

    shareable: bool = None
    inverted: bool = None

    def generate_element_config(self) -> Dict[str, int]:
        """Generates the config entry for a digital channel in the QUA config.

        This config entry goes into:
        config.elements.<element_name>.digitalInputs.<opx_output[1]>

        Returns:
            Dict[str, int]: The digital channel config entry.
                Contains "port", and optionally "delay", "buffer" if specified
        """
        if isinstance(self.opx_output, DigitalOutputPort):
            opx_output = self.opx_output.port_tuple
        else:
            opx_output = tuple(self.opx_output)

        digital_cfg: Dict[str, Any] = {"port": opx_output}
        if self.delay is not None:
            digital_cfg["delay"] = self.delay
        if self.buffer is not None:
            digital_cfg["buffer"] = self.buffer
        return digital_cfg

    def apply_to_config(self, config: dict) -> None:
        """Adds this DigitalOutputChannel to the QUA configuration.

        config.controllers.<controller_name>.digital_outputs.<port> will be updated
        with the shareable and inverted settings of this channel if specified.

        See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
        for details.
        """
        if isinstance(self.opx_output, DigitalOutputPort):
            if self.shareable is not None:
                warnings.warn(
                    f"Property {self.name}.shareable (={self.shareable}) is ignored "
                    "because it should be set in {self.name}.opx_output.shareable"
                )
            if self.inverted is not None:
                warnings.warn(
                    f"Property {self.name}.inverted (={self.inverted}) is ignored "
                    "because it should be set in {self.name}.opx_output.inverted"
                )
            return

        shareable = self.shareable if self.shareable is not None else False
        inverted = self.inverted if self.inverted is not None else False
        if len(self.opx_output) == 2:
            digital_output_port = OPXPlusDigitalOutputPort(
                *self.opx_output, shareable=shareable, inverted=inverted
            )
        else:
            digital_output_port = FEMDigitalOutputPort(
                *self.opx_output, shareable=shareable, inverted=inverted
            )
        digital_output_port.apply_to_config(config)

apply_to_config(config)

Adds this DigitalOutputChannel to the QUA configuration.

config.controllers..digital_outputs. will be updated with the shareable and inverted settings of this channel if specified.

See QuamComponent.apply_to_config for details.

Source code in quam/components/channels.py

def apply_to_config(self, config: dict) -> None:
    """Adds this DigitalOutputChannel to the QUA configuration.

    config.controllers.<controller_name>.digital_outputs.<port> will be updated
    with the shareable and inverted settings of this channel if specified.

    See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
    for details.
    """
    if isinstance(self.opx_output, DigitalOutputPort):
        if self.shareable is not None:
            warnings.warn(
                f"Property {self.name}.shareable (={self.shareable}) is ignored "
                "because it should be set in {self.name}.opx_output.shareable"
            )
        if self.inverted is not None:
            warnings.warn(
                f"Property {self.name}.inverted (={self.inverted}) is ignored "
                "because it should be set in {self.name}.opx_output.inverted"
            )
        return

    shareable = self.shareable if self.shareable is not None else False
    inverted = self.inverted if self.inverted is not None else False
    if len(self.opx_output) == 2:
        digital_output_port = OPXPlusDigitalOutputPort(
            *self.opx_output, shareable=shareable, inverted=inverted
        )
    else:
        digital_output_port = FEMDigitalOutputPort(
            *self.opx_output, shareable=shareable, inverted=inverted
        )
    digital_output_port.apply_to_config(config)

generate_element_config()

Generates the config entry for a digital channel in the QUA config.

This config entry goes into: config.elements..digitalInputs.

Returns:

Type	Description
Dict[str, int]	Dict[str, int]: The digital channel config entry. Contains "port", and optionally "delay", "buffer" if specified

Source code in quam/components/channels.py

def generate_element_config(self) -> Dict[str, int]:
    """Generates the config entry for a digital channel in the QUA config.

    This config entry goes into:
    config.elements.<element_name>.digitalInputs.<opx_output[1]>

    Returns:
        Dict[str, int]: The digital channel config entry.
            Contains "port", and optionally "delay", "buffer" if specified
    """
    if isinstance(self.opx_output, DigitalOutputPort):
        opx_output = self.opx_output.port_tuple
    else:
        opx_output = tuple(self.opx_output)

    digital_cfg: Dict[str, Any] = {"port": opx_output}
    if self.delay is not None:
        digital_cfg["delay"] = self.delay
    if self.buffer is not None:
        digital_cfg["buffer"] = self.buffer
    return digital_cfg

IQChannel

Bases: Channel

QuAM component for an IQ output channel.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output_I	Tuple[str, int]	Channel I output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_Q	Tuple[str, int]	Channel Q output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_offset_I	float	The offset of the I channel. Default is 0.	required
opx_output_offset_Q	float	The offset of the Q channel. Default is 0.	required
intermediate_frequency	float	Intermediate frequency of the mixer. Default is 0.0	required
LO_frequency	float	Local oscillator frequency. Default is the LO frequency of the frequency converter up component.	required
RF_frequency	float	RF frequency of the mixer. By default, the RF frequency is inferred by adding the LO frequency and the intermediate frequency.	required
frequency_converter_up	FrequencyConverter	Frequency converter QuAM component for the IQ output.	required

Source code in quam/components/channels.py

@quam_dataclass
class IQChannel(Channel):
    """QuAM component for an IQ output channel.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output_I (Tuple[str, int]): Channel I output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_Q (Tuple[str, int]): Channel Q output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_offset_I float: The offset of the I channel. Default is 0.
        opx_output_offset_Q float: The offset of the Q channel. Default is 0.
        intermediate_frequency (float): Intermediate frequency of the mixer.
            Default is 0.0
        LO_frequency (float): Local oscillator frequency. Default is the LO frequency
            of the frequency converter up component.
        RF_frequency (float): RF frequency of the mixer. By default, the RF frequency
            is inferred by adding the LO frequency and the intermediate frequency.
        frequency_converter_up (FrequencyConverter): Frequency converter QuAM component
            for the IQ output.
    """

    opx_output_I: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogOutputPort]
    opx_output_Q: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogOutputPort]

    opx_output_offset_I: float = None
    opx_output_offset_Q: float = None

    frequency_converter_up: BaseFrequencyConverter

    LO_frequency: float = "#./frequency_converter_up/LO_frequency"
    RF_frequency: float = "#./inferred_RF_frequency"

    _default_label: ClassVar[str] = "IQ"

    @property
    def inferred_RF_frequency(self) -> float:
        """Inferred RF frequency by adding LO and IF

        Can be used by having reference `RF_frequency = "#./inferred_RF_frequency"`
        Returns:
            self.LO_frequency + self.intermediate_frequency
        """
        name = getattr(self, "name", self.__class__.__name__)
        if not isinstance(self.LO_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring RF frequency for channel {name}: "
                f"LO_frequency is not a number: {self.LO_frequency}"
            )
        if not isinstance(self.intermediate_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring RF frequency for channel {name}: "
                f"intermediate_frequency is not a number: {self.intermediate_frequency}"
            )
        return self.LO_frequency + self.intermediate_frequency

    @property
    def inferred_intermediate_frequency(self) -> float:
        """Inferred intermediate frequency by subtracting LO from RF

        Can be used by having reference
        `intermediate_frequency = "#./inferred_intermediate_frequency"`

        Returns:
            self.RF_frequency - self.LO_frequency
        """
        name = getattr(self, "name", self.__class__.__name__)
        if not isinstance(self.LO_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring intermediate frequency for channel {name}: "
                f"LO_frequency is not a number: {self.LO_frequency}"
            )
        if not isinstance(self.RF_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring intermediate frequency for channel {name}: "
                f"RF_frequency is not a number: {self.RF_frequency}"
            )
        return self.RF_frequency - self.LO_frequency

    @property
    def inferred_LO_frequency(self) -> float:
        """Inferred LO frequency by subtracting IF from RF

        Can be used by having reference `LO_frequency = "#./inferred_LO_frequency"`

        Returns:
            self.RF_frequency - self.intermediate_frequency
        """
        name = getattr(self, "name", self.__class__.__name__)
        if not isinstance(self.RF_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring LO frequency for channel {name}: "
                f"RF_frequency is not a number: {self.RF_frequency}"
            )
        if not isinstance(self.intermediate_frequency, (float, int)):
            raise AttributeError(
                f"Error inferring LO frequency for channel {name}: "
                f"intermediate_frequency is not a number: {self.intermediate_frequency}"
            )
        return self.RF_frequency - self.intermediate_frequency

    @property
    def local_oscillator(self) -> Optional[LocalOscillator]:
        return getattr(self.frequency_converter_up, "local_oscillator", None)

    @property
    def mixer(self) -> Optional[Mixer]:
        return getattr(self.frequency_converter_up, "mixer", None)

    @property
    def rf_frequency(self):
        warnings.warn(
            "rf_frequency is deprecated, use RF_frequency instead", DeprecationWarning
        )
        return self.frequency_converter_up.LO_frequency + self.intermediate_frequency

    def set_dc_offset(self, offset: QuaNumberType, element_input: Literal["I", "Q"]):
        """Set the DC offset of an element's input to the given value.
        This value will remain the DC offset until changed or until the Quantum Machine
        is closed.

        Args:
            offset (QuaNumberType): The DC offset to set the input to.
                This is limited by the OPX output voltage range.
                The number can be a QUA variable
            element_input (Literal["I", "Q"]): The element input to set the offset for.

        Raises:
            ValueError: If element_input is not "I" or "Q"
        """
        if element_input not in ["I", "Q"]:
            raise ValueError(
                f"element_input should be either 'I' or 'Q', got {element_input}"
            )
        set_dc_offset(element=self.name, element_input=element_input, offset=offset)

    def apply_to_config(self, config: dict):
        """Adds this IQChannel to the QUA configuration.

        See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
        for details.
        """
        # Add pulses & waveforms
        super().apply_to_config(config)

        if str_ref.is_reference(self.name):
            raise AttributeError(
                f"Channel {self.get_reference()} cannot be added to the config because"
                " it doesn't have a name. Either set channel.id to a string or"
                " integer, or channel should be an attribute of another QuAM component"
                " with a name."
            )

        element_config = config["elements"][self.name]

        from quam.components.octave import OctaveUpConverter

        if isinstance(self.frequency_converter_up, OctaveUpConverter):
            octave = self.frequency_converter_up.octave
            if octave is None:
                raise ValueError(
                    f"Error generating config: channel {self.name} has an "
                    f"OctaveUpConverter (id={self.frequency_converter_up.id}) without "
                    "an attached Octave"
                )
            element_config["RF_inputs"] = {
                "port": (octave.name, self.frequency_converter_up.id)
            }
        elif str_ref.is_reference(self.frequency_converter_up):
            raise ValueError(
                f"Error generating config: channel {self.name} could not determine "
                f'"frequency_converter_up", it seems to point to a non-existent '
                f"reference: {self.frequency_converter_up}"
            )
        else:

            element_config["mixInputs"] = {}  # To be filled in next section
            if self.mixer is not None:
                element_config["mixInputs"]["mixer"] = self.mixer.name
            if self.local_oscillator is not None:
                element_config["mixInputs"][
                    "lo_frequency"
                ] = self.local_oscillator.frequency

        opx_outputs = [self.opx_output_I, self.opx_output_Q]
        offsets = [self.opx_output_offset_I, self.opx_output_offset_Q]
        for I_or_Q, opx_output, offset in zip("IQ", opx_outputs, offsets):
            if isinstance(opx_output, LFAnalogOutputPort):
                opx_port = opx_output
            elif len(opx_output) == 2:
                opx_port = OPXPlusAnalogOutputPort(*opx_output, offset=offset)
                opx_port.apply_to_config(config)
            else:
                opx_port = LFFEMAnalogOutputPort(*opx_output, offset=offset)
                opx_port.apply_to_config(config)

            if "mixInputs" in element_config:
                element_config["mixInputs"][I_or_Q] = opx_port.port_tuple

inferred_LO_frequency: float property

Inferred LO frequency by subtracting IF from RF

Can be used by having reference LO_frequency = "#./inferred_LO_frequency"

Returns:

Type	Description
float	self.RF_frequency - self.intermediate_frequency

inferred_RF_frequency: float property

Inferred RF frequency by adding LO and IF

Can be used by having reference RF_frequency = "#./inferred_RF_frequency" Returns: self.LO_frequency + self.intermediate_frequency

inferred_intermediate_frequency: float property

Inferred intermediate frequency by subtracting LO from RF

Can be used by having reference intermediate_frequency = "#./inferred_intermediate_frequency"

Returns:

Type	Description
float	self.RF_frequency - self.LO_frequency

apply_to_config(config)

Adds this IQChannel to the QUA configuration.

See QuamComponent.apply_to_config for details.

Source code in quam/components/channels.py

def apply_to_config(self, config: dict):
    """Adds this IQChannel to the QUA configuration.

    See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
    for details.
    """
    # Add pulses & waveforms
    super().apply_to_config(config)

    if str_ref.is_reference(self.name):
        raise AttributeError(
            f"Channel {self.get_reference()} cannot be added to the config because"
            " it doesn't have a name. Either set channel.id to a string or"
            " integer, or channel should be an attribute of another QuAM component"
            " with a name."
        )

    element_config = config["elements"][self.name]

    from quam.components.octave import OctaveUpConverter

    if isinstance(self.frequency_converter_up, OctaveUpConverter):
        octave = self.frequency_converter_up.octave
        if octave is None:
            raise ValueError(
                f"Error generating config: channel {self.name} has an "
                f"OctaveUpConverter (id={self.frequency_converter_up.id}) without "
                "an attached Octave"
            )
        element_config["RF_inputs"] = {
            "port": (octave.name, self.frequency_converter_up.id)
        }
    elif str_ref.is_reference(self.frequency_converter_up):
        raise ValueError(
            f"Error generating config: channel {self.name} could not determine "
            f'"frequency_converter_up", it seems to point to a non-existent '
            f"reference: {self.frequency_converter_up}"
        )
    else:

        element_config["mixInputs"] = {}  # To be filled in next section
        if self.mixer is not None:
            element_config["mixInputs"]["mixer"] = self.mixer.name
        if self.local_oscillator is not None:
            element_config["mixInputs"][
                "lo_frequency"
            ] = self.local_oscillator.frequency

    opx_outputs = [self.opx_output_I, self.opx_output_Q]
    offsets = [self.opx_output_offset_I, self.opx_output_offset_Q]
    for I_or_Q, opx_output, offset in zip("IQ", opx_outputs, offsets):
        if isinstance(opx_output, LFAnalogOutputPort):
            opx_port = opx_output
        elif len(opx_output) == 2:
            opx_port = OPXPlusAnalogOutputPort(*opx_output, offset=offset)
            opx_port.apply_to_config(config)
        else:
            opx_port = LFFEMAnalogOutputPort(*opx_output, offset=offset)
            opx_port.apply_to_config(config)

        if "mixInputs" in element_config:
            element_config["mixInputs"][I_or_Q] = opx_port.port_tuple

set_dc_offset(offset, element_input)

Set the DC offset of an element's input to the given value. This value will remain the DC offset until changed or until the Quantum Machine is closed.

Parameters:

Name	Type	Description	Default
offset	QuaNumberType	The DC offset to set the input to. This is limited by the OPX output voltage range. The number can be a QUA variable	required
element_input	Literal['I', 'Q']	The element input to set the offset for.	required

Raises:

Type	Description
ValueError	If element_input is not "I" or "Q"

Source code in quam/components/channels.py

def set_dc_offset(self, offset: QuaNumberType, element_input: Literal["I", "Q"]):
    """Set the DC offset of an element's input to the given value.
    This value will remain the DC offset until changed or until the Quantum Machine
    is closed.

    Args:
        offset (QuaNumberType): The DC offset to set the input to.
            This is limited by the OPX output voltage range.
            The number can be a QUA variable
        element_input (Literal["I", "Q"]): The element input to set the offset for.

    Raises:
        ValueError: If element_input is not "I" or "Q"
    """
    if element_input not in ["I", "Q"]:
        raise ValueError(
            f"element_input should be either 'I' or 'Q', got {element_input}"
        )
    set_dc_offset(element=self.name, element_input=element_input, offset=offset)

InIQChannel

Bases: _InComplexChannel

QuAM component for an IQ input channel

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "readout") and value is a ReadoutPulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_input_I	Tuple[str, int]	Channel I input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_Q	Tuple[str, int]	Channel Q input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset_I	float	The offset of the I channel. Default is 0.	required
opx_input_offset_Q	float	The offset of the Q channel. Default is 0.	required
frequency_converter_down	Optional[FrequencyConverter]	Frequency converter QuAM component for the IQ input port. Only needed for the old Octave.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required
input_gain	float	The gain of the input channel. Default is None.	required

Source code in quam/components/channels.py

@quam_dataclass
class InIQChannel(_InComplexChannel):
    """QuAM component for an IQ input channel

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "readout") and value is a
            ReadoutPulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_input_I (Tuple[str, int]): Channel I input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_Q (Tuple[str, int]): Channel Q input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset_I float: The offset of the I channel. Default is 0.
        opx_input_offset_Q float: The offset of the Q channel. Default is 0.
        frequency_converter_down (Optional[FrequencyConverter]): Frequency converter
            QuAM component for the IQ input port. Only needed for the old Octave.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
        input_gain (float): The gain of the input channel. Default is None.
    """

    opx_input_I: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogInputPort]
    opx_input_Q: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogInputPort]

    time_of_flight: int = 24
    smearing: int = 0

    opx_input_offset_I: float = None
    opx_input_offset_Q: float = None

    input_gain: Optional[int] = None

    frequency_converter_down: BaseFrequencyConverter = None

    _default_label: ClassVar[str] = "IQ"

    def apply_to_config(self, config: dict):
        """Adds this InOutIQChannel to the QUA configuration.

        See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
        for details.
        """
        super().apply_to_config(config)

        # Note outputs instead of inputs because it's w.r.t. the QPU
        element_config = config["elements"][self.name]
        element_config["smearing"] = self.smearing
        element_config["time_of_flight"] = self.time_of_flight

        from quam.components.octave import OctaveDownConverter

        if isinstance(self.frequency_converter_down, OctaveDownConverter):
            octave = self.frequency_converter_down.octave
            if octave is None:
                raise ValueError(
                    f"Error generating config: channel {self.name} has an "
                    f"OctaveDownConverter (id={self.frequency_converter_down.id}) "
                    "without an attached Octave"
                )
            element_config["RF_outputs"] = {
                "port": (octave.name, self.frequency_converter_down.id)
            }
        elif str_ref.is_reference(self.frequency_converter_down):
            raise ValueError(
                f"Error generating config: channel {self.name} could not determine "
                f'"frequency_converter_down", it seems to point to a non-existent '
                f"reference: {self.frequency_converter_down}"
            )
        else:
            # To be filled in next section
            element_config["outputs"] = {}

        opx_inputs = [self.opx_input_I, self.opx_input_Q]
        offsets = [self.opx_input_offset_I, self.opx_input_offset_Q]
        input_gain = int(self.input_gain if self.input_gain is not None else 0)
        for k, (opx_input, offset) in enumerate(zip(opx_inputs, offsets), start=1):
            if isinstance(opx_input, LFAnalogInputPort):
                opx_port = opx_input
            elif len(opx_input) == 2:
                opx_port = OPXPlusAnalogInputPort(
                    *opx_input, offset=offset, gain_db=input_gain
                )
                opx_port.apply_to_config(config)
            else:
                opx_port = LFFEMAnalogInputPort(
                    *opx_input, offset=offset, gain_db=input_gain
                )
                opx_port.apply_to_config(config)
            if not isinstance(self.frequency_converter_down, OctaveDownConverter):
                element_config["outputs"][f"out{k}"] = opx_port.port_tuple

apply_to_config(config)

Adds this InOutIQChannel to the QUA configuration.

See QuamComponent.apply_to_config for details.

Source code in quam/components/channels.py

def apply_to_config(self, config: dict):
    """Adds this InOutIQChannel to the QUA configuration.

    See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
    for details.
    """
    super().apply_to_config(config)

    # Note outputs instead of inputs because it's w.r.t. the QPU
    element_config = config["elements"][self.name]
    element_config["smearing"] = self.smearing
    element_config["time_of_flight"] = self.time_of_flight

    from quam.components.octave import OctaveDownConverter

    if isinstance(self.frequency_converter_down, OctaveDownConverter):
        octave = self.frequency_converter_down.octave
        if octave is None:
            raise ValueError(
                f"Error generating config: channel {self.name} has an "
                f"OctaveDownConverter (id={self.frequency_converter_down.id}) "
                "without an attached Octave"
            )
        element_config["RF_outputs"] = {
            "port": (octave.name, self.frequency_converter_down.id)
        }
    elif str_ref.is_reference(self.frequency_converter_down):
        raise ValueError(
            f"Error generating config: channel {self.name} could not determine "
            f'"frequency_converter_down", it seems to point to a non-existent '
            f"reference: {self.frequency_converter_down}"
        )
    else:
        # To be filled in next section
        element_config["outputs"] = {}

    opx_inputs = [self.opx_input_I, self.opx_input_Q]
    offsets = [self.opx_input_offset_I, self.opx_input_offset_Q]
    input_gain = int(self.input_gain if self.input_gain is not None else 0)
    for k, (opx_input, offset) in enumerate(zip(opx_inputs, offsets), start=1):
        if isinstance(opx_input, LFAnalogInputPort):
            opx_port = opx_input
        elif len(opx_input) == 2:
            opx_port = OPXPlusAnalogInputPort(
                *opx_input, offset=offset, gain_db=input_gain
            )
            opx_port.apply_to_config(config)
        else:
            opx_port = LFFEMAnalogInputPort(
                *opx_input, offset=offset, gain_db=input_gain
            )
            opx_port.apply_to_config(config)
        if not isinstance(self.frequency_converter_down, OctaveDownConverter):
            element_config["outputs"][f"out{k}"] = opx_port.port_tuple

InIQOutSingleChannel

Bases: SingleChannel, InIQChannel

QuAM component for an IQ input channel with a single output.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "readout") and value is a ReadoutPulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output	Tuple[str, int]	Channel output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_offset	float	DC offset for the output port.	required
opx_input_I	Tuple[str, int]	Channel I input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_Q	Tuple[str, int]	Channel Q input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset_I	float	The offset of the I channel. Default is 0.	required
opx_input_offset_Q	float	The offset of the Q channel. Default is 0.	required
filter_fir_taps	List[float]	FIR filter taps for the output port.	required
filter_iir_taps	List[float]	IIR filter taps for the output port.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InIQOutSingleChannel(SingleChannel, InIQChannel):
    """QuAM component for an IQ input channel with a single output.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "readout") and value is a
            ReadoutPulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output (Tuple[str, int]): Channel output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_offset (float): DC offset for the output port.
        opx_input_I (Tuple[str, int]): Channel I input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_Q (Tuple[str, int]): Channel Q input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset_I float: The offset of the I channel. Default is 0.
        opx_input_offset_Q float: The offset of the Q channel. Default is 0.
        filter_fir_taps (List[float]): FIR filter taps for the output port.
        filter_iir_taps (List[float]): IIR filter taps for the output port.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    pass

InMWChannel

Bases: _InComplexChannel

QuAM component for a MW FEM input channel

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_input	MWFEMAnalogInputPort	Channel input port from the OPX perspective.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required

Source code in quam/components/channels.py

@quam_dataclass
class InMWChannel(_InComplexChannel):
    """QuAM component for a MW FEM input channel

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_input (MWFEMAnalogInputPort)): Channel input port from the OPX perspective.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
    """

    opx_input: MWFEMAnalogInputPort

    time_of_flight: int = 24
    smearing: int = 0

    def apply_to_config(self, config: Dict) -> None:
        super().apply_to_config(config)

        element_config = config["elements"][self.name]
        element_config["MWOutput"] = {
            "port": self.opx_input.port_tuple
        }
        element_config["smearing"] = self.smearing
        element_config["time_of_flight"] = self.time_of_flight

InOutIQChannel

Bases: IQChannel, InIQChannel

QuAM component for an IQ channel with both input and output.

An example of such a channel is a readout resonator, where you may want to apply a readout tone and then measure the response.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "readout") and value is a ReadoutPulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output_I	Tuple[str, int]	Channel I output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_Q	Tuple[str, int]	Channel Q output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_offset_I	float	The offset of the I channel. Default is 0.	required
opx_output_offset_Q	float	The offset of the Q channel. Default is 0.	required
opx_input_I	Tuple[str, int]	Channel I input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_Q	Tuple[str, int]	Channel Q input port from the OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset_I	float	The offset of the I channel. Default is 0.	required
opx_input_offset_Q	float	The offset of the Q channel. Default is 0.	required
intermediate_frequency	float	Intermediate frequency of the mixer. Default is 0.0	required
LO_frequency	float	Local oscillator frequency. Default is the LO frequency of the frequency converter up component.	required
RF_frequency	float	RF frequency of the mixer. By default, the RF frequency is inferred by adding the LO frequency and the intermediate frequency.	required
frequency_converter_up	FrequencyConverter	Frequency converter QuAM component for the IQ output.	required
frequency_converter_down	Optional[FrequencyConverter]	Frequency converter QuAM component for the IQ input port. Only needed for the old Octave.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InOutIQChannel(IQChannel, InIQChannel):
    """QuAM component for an IQ channel with both input and output.

    An example of such a channel is a readout resonator, where you may want to
    apply a readout tone and then measure the response.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "readout") and value is a
            ReadoutPulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output_I (Tuple[str, int]): Channel I output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_Q (Tuple[str, int]): Channel Q output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_offset_I float: The offset of the I channel. Default is 0.
        opx_output_offset_Q float: The offset of the Q channel. Default is 0.
        opx_input_I (Tuple[str, int]): Channel I input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_Q (Tuple[str, int]): Channel Q input port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset_I float: The offset of the I channel. Default is 0.
        opx_input_offset_Q float: The offset of the Q channel. Default is 0.
        intermediate_frequency (float): Intermediate frequency of the mixer.
            Default is 0.0
        LO_frequency (float): Local oscillator frequency. Default is the LO frequency
            of the frequency converter up component.
        RF_frequency (float): RF frequency of the mixer. By default, the RF frequency
            is inferred by adding the LO frequency and the intermediate frequency.
        frequency_converter_up (FrequencyConverter): Frequency converter QuAM component
            for the IQ output.
        frequency_converter_down (Optional[FrequencyConverter]): Frequency converter
            QuAM component for the IQ input port. Only needed for the old Octave.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    pass

InOutMWChannel

Bases: MWChannel, InMWChannel

QuAM component for a MW FEM input channel

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output	MWFEMAnalogOutputPort	Channel output port from the OPX perspective.	required
opx_input	MWFEMAnalogInputPort	Channel input port from the OPX perspective.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required
upconverter	int	The upconverter to use. Default is 1.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InOutMWChannel(MWChannel, InMWChannel):
    """QuAM component for a MW FEM input channel

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output (MWFEMAnalogOutputPort): Channel output port from the OPX perspective.
        opx_input (MWFEMAnalogInputPort)): Channel input port from the OPX perspective.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
        upconverter (int): The upconverter to use. Default is 1.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    pass

InOutSingleChannel

Bases: SingleChannel, InSingleChannel

QuAM component for a single (not IQ) input + output channel.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output	Tuple[str, int]	Channel output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_offset	float	DC offset for the output port.	required
opx_input	Tuple[str, int]	Channel input port from OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset	float	DC offset for the input port.	required
filter_fir_taps	List[float]	FIR filter taps for the output port.	required
filter_iir_taps	List[float]	IIR filter taps for the output port.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InOutSingleChannel(SingleChannel, InSingleChannel):
    """QuAM component for a single (not IQ) input + output channel.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output (Tuple[str, int]): Channel output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_offset (float): DC offset for the output port.
        opx_input (Tuple[str, int]): Channel input port from OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset (float): DC offset for the input port.
        filter_fir_taps (List[float]): FIR filter taps for the output port.
        filter_iir_taps (List[float]): IIR filter taps for the output port.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    pass

InSingleChannel

Bases: Channel

QuAM component for a single (not IQ) input channel.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_input	Tuple[str, int]	Channel input port from OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset	float	DC offset for the input port.	required
intermediate_frequency	float	Intermediate frequency of OPX input, default is None.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InSingleChannel(Channel):
    """QuAM component for a single (not IQ) input channel.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_input (Tuple[str, int]): Channel input port from OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset (float): DC offset for the input port.
        intermediate_frequency (float): Intermediate frequency of OPX input,
            default is None.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    opx_input: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogInputPort]
    opx_input_offset: float = None

    time_of_flight: int = 24
    smearing: int = 0

    def apply_to_config(self, config: dict):
        """Adds this InSingleChannel to the QUA configuration.

        See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
        for details.
        """
        # Add output to config
        super().apply_to_config(config)

        # Note outputs instead of inputs because it's w.r.t. the QPU
        element_config = config["elements"][self.name]
        element_config["smearing"] = self.smearing
        element_config["time_of_flight"] = self.time_of_flight

        if isinstance(self.opx_input, LFAnalogInputPort):
            opx_port = self.opx_input
        elif len(self.opx_input) == 2:
            opx_port = OPXPlusAnalogInputPort(
                *self.opx_input, offset=self.opx_input_offset
            )
            opx_port.apply_to_config(config)
        else:
            opx_port = LFFEMAnalogInputPort(
                *self.opx_input, offset=self.opx_input_offset
            )
            opx_port.apply_to_config(config)

        element_config["outputs"] = {"out1": opx_port.port_tuple}

    def measure(
        self,
        pulse_name: str,
        amplitude_scale: Union[float, AmpValuesType] = None,
        qua_vars: Tuple[QuaVariableType, ...] = None,
        stream=None,
    ) -> Tuple[QuaVariableType, QuaVariableType]:
        """Perform a full demodulation measurement on this channel.

        Args:
            pulse_name (str): The name of the pulse to play. Should be registered in
                `self.operations`.
            amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
                Can be either a float, or qua.amp(float).
            qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
                variables to store the I, Q measurement results.
                If not provided, new variables will be declared and returned.
            stream (Optional[StreamType]): The stream to save the measurement result to.
                If not provided, the raw ADC signal will not be streamed.

        Returns:
            I, Q: The QUA variables used to store the measurement results.
                If provided as input, the same variables will be returned.
                If not provided, new variables will be declared and returned.

        Raises:
            ValueError: If `qua_vars` is provided and is not a tuple of two QUA
                variables.
        """

        pulse: BaseReadoutPulse = self.operations[pulse_name]

        if qua_vars is not None:
            if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
                raise ValueError(
                    f"InOutSingleChannel.measure received kwarg 'qua_vars' "
                    f"which is not a tuple of two QUA variables. Received {qua_vars=}"
                )
        else:
            qua_vars = [declare(fixed) for _ in range(2)]

        if amplitude_scale is not None:
            if not isinstance(amplitude_scale, _PulseAmp):
                amplitude_scale = amp(amplitude_scale)
            pulse_name *= amplitude_scale

        integration_weight_labels = list(pulse.integration_weights_mapping)
        measure(
            pulse_name,
            self.name,
            stream,
            demod.full(integration_weight_labels[0], qua_vars[0], "out1"),
            demod.full(integration_weight_labels[1], qua_vars[1], "out1"),
        )
        return tuple(qua_vars)

    def measure_accumulated(
        self,
        pulse_name: str,
        amplitude_scale: Union[float, AmpValuesType] = None,
        num_segments: int = None,
        segment_length: int = None,
        qua_vars: Tuple[QuaVariableType, ...] = None,
        stream=None,
    ) -> Tuple[QuaVariableType, QuaVariableType]:
        """Perform an accumulated demodulation measurement on this channel.

        Args:
            pulse_name (str): The name of the pulse to play. Should be registered in
                `self.operations`.
            amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
                Can be either a float, or qua.amp(float).
            num_segments (int): The number of segments to accumulate.
                Should either specify this or `segment_length`.
            segment_length (int): The length of the segment to accumulate.
                Should either specify this or `num_segments`.
            qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
                variables to store the I, Q measurement results.
                If not provided, new variables will be declared and returned.
            stream (Optional[StreamType]): The stream to save the measurement result to.
                If not provided, the raw ADC signal will not be streamed.

        Returns:
            I, Q: The QUA variables used to store the measurement results.
                If provided as input, the same variables will be returned.
                If not provided, new variables will be declared and returned.

        Raises:
            ValueError: If both `num_segments` and `segment_length` are provided, or if
                neither are provided.
            ValueError: If `qua_vars` is provided and is not a tuple of two QUA
                variables.
        """
        pulse: BaseReadoutPulse = self.operations[pulse_name]

        if num_segments is None and segment_length is None:
            raise ValueError(
                "InOutSingleChannel.measure_accumulated requires either 'segment_length' "
                "or 'num_segments' to be provided."
            )
        elif num_segments is not None and segment_length is not None:
            raise ValueError(
                "InOutSingleChannel.measure_accumulated received both 'segment_length' "
                "and 'num_segments'. Please provide only one."
            )
        elif num_segments is None:
            num_segments = int(pulse.length / (4 * segment_length))  # Number of slices
        elif segment_length is None:
            segment_length = int(pulse.length / (4 * num_segments))

        if qua_vars is not None:
            if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
                raise ValueError(
                    f"InOutSingleChannel.measure_accumulated received kwarg 'qua_vars' "
                    f"which is not a tuple of two QUA variables. Received {qua_vars=}"
                )
        else:
            qua_vars = [declare(fixed, size=num_segments) for _ in range(2)]

        if amplitude_scale is not None:
            if not isinstance(amplitude_scale, _PulseAmp):
                amplitude_scale = amp(amplitude_scale)
            pulse_name *= amplitude_scale

        integration_weight_labels = list(pulse.integration_weights_mapping)
        measure(
            pulse_name,
            self.name,
            stream,
            demod.accumulated(
                integration_weight_labels[0], qua_vars[0], segment_length, "out1"
            ),
            demod.accumulated(
                integration_weight_labels[1], qua_vars[1], segment_length, "out1"
            ),
        )
        return tuple(qua_vars)

    def measure_sliced(
        self,
        pulse_name: str,
        amplitude_scale: Union[float, AmpValuesType] = None,
        num_segments: int = None,
        segment_length: int = None,
        qua_vars: Tuple[QuaVariableType, ...] = None,
        stream=None,
    ) -> Tuple[QuaVariableType, QuaVariableType]:
        """Perform an accumulated demodulation measurement on this channel.

        Args:
            pulse_name (str): The name of the pulse to play. Should be registered in
                `self.operations`.
            amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
                Can be either a float, or qua.amp(float).
            num_segments (int): The number of segments to accumulate.
                Should either specify this or `segment_length`.
            segment_length (int): The length of the segment to accumulate.
                Should either specify this or `num_segments`.
            qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
                variables to store the I, Q measurement results.
                If not provided, new variables will be declared and returned.
            stream (Optional[StreamType]): The stream to save the measurement result to.
                If not provided, the raw ADC signal will not be streamed.

        Returns:
            I, Q: The QUA variables used to store the measurement results.
                If provided as input, the same variables will be returned.
                If not provided, new variables will be declared and returned.

        Raises:
            ValueError: If both `num_segments` and `segment_length` are provided, or if
                neither are provided.
            ValueError: If `qua_vars` is provided and is not a tuple of two QUA
                variables.
        """
        pulse: BaseReadoutPulse = self.operations[pulse_name]

        if num_segments is None and segment_length is None:
            raise ValueError(
                "InOutSingleChannel.measure_sliced requires either 'segment_length' "
                "or 'num_segments' to be provided."
            )
        elif num_segments is not None and segment_length is not None:
            raise ValueError(
                "InOutSingleChannel.measure_sliced received both 'segment_length' "
                "and 'num_segments'. Please provide only one."
            )
        elif num_segments is None:
            num_segments = int(pulse.length / (4 * segment_length))  # Number of slices
        elif segment_length is None:
            segment_length = int(pulse.length / (4 * num_segments))

        if qua_vars is not None:
            if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
                raise ValueError(
                    f"InOutSingleChannel.measure_sliced received kwarg 'qua_vars' "
                    f"which is not a tuple of two QUA variables. Received {qua_vars=}"
                )
        else:
            qua_vars = [declare(fixed, size=num_segments) for _ in range(2)]

        if amplitude_scale is not None:
            if not isinstance(amplitude_scale, _PulseAmp):
                amplitude_scale = amp(amplitude_scale)
            pulse_name *= amplitude_scale

        integration_weight_labels = list(pulse.integration_weights_mapping)
        measure(
            pulse_name,
            self.name,
            stream,
            demod.sliced(
                integration_weight_labels[0], qua_vars[0], segment_length, "out1"
            ),
            demod.sliced(
                integration_weight_labels[1], qua_vars[1], segment_length, "out1"
            ),
        )
        return tuple(qua_vars)

apply_to_config(config)

Adds this InSingleChannel to the QUA configuration.

See QuamComponent.apply_to_config for details.

Source code in quam/components/channels.py

def apply_to_config(self, config: dict):
    """Adds this InSingleChannel to the QUA configuration.

    See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
    for details.
    """
    # Add output to config
    super().apply_to_config(config)

    # Note outputs instead of inputs because it's w.r.t. the QPU
    element_config = config["elements"][self.name]
    element_config["smearing"] = self.smearing
    element_config["time_of_flight"] = self.time_of_flight

    if isinstance(self.opx_input, LFAnalogInputPort):
        opx_port = self.opx_input
    elif len(self.opx_input) == 2:
        opx_port = OPXPlusAnalogInputPort(
            *self.opx_input, offset=self.opx_input_offset
        )
        opx_port.apply_to_config(config)
    else:
        opx_port = LFFEMAnalogInputPort(
            *self.opx_input, offset=self.opx_input_offset
        )
        opx_port.apply_to_config(config)

    element_config["outputs"] = {"out1": opx_port.port_tuple}

measure(pulse_name, amplitude_scale=None, qua_vars=None, stream=None)

Perform a full demodulation measurement on this channel.

Parameters:

Name	Type	Description	Default
pulse_name	str	The name of the pulse to play. Should be registered in self.operations.	required
amplitude_scale	(float, _PulseAmp)	Amplitude scale of the pulse. Can be either a float, or qua.amp(float).	None
qua_vars	Tuple[QuaVariableType, ...]	Two QUA variables to store the I, Q measurement results. If not provided, new variables will be declared and returned.	None
stream	Optional[StreamType]	The stream to save the measurement result to. If not provided, the raw ADC signal will not be streamed.	None

Returns:

Type	Description
Tuple[QuaVariableType, QuaVariableType]	I, Q: The QUA variables used to store the measurement results. If provided as input, the same variables will be returned. If not provided, new variables will be declared and returned.

Raises:

Type	Description
ValueError	If qua_vars is provided and is not a tuple of two QUA variables.

Source code in quam/components/channels.py

def measure(
    self,
    pulse_name: str,
    amplitude_scale: Union[float, AmpValuesType] = None,
    qua_vars: Tuple[QuaVariableType, ...] = None,
    stream=None,
) -> Tuple[QuaVariableType, QuaVariableType]:
    """Perform a full demodulation measurement on this channel.

    Args:
        pulse_name (str): The name of the pulse to play. Should be registered in
            `self.operations`.
        amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
            Can be either a float, or qua.amp(float).
        qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
            variables to store the I, Q measurement results.
            If not provided, new variables will be declared and returned.
        stream (Optional[StreamType]): The stream to save the measurement result to.
            If not provided, the raw ADC signal will not be streamed.

    Returns:
        I, Q: The QUA variables used to store the measurement results.
            If provided as input, the same variables will be returned.
            If not provided, new variables will be declared and returned.

    Raises:
        ValueError: If `qua_vars` is provided and is not a tuple of two QUA
            variables.
    """

    pulse: BaseReadoutPulse = self.operations[pulse_name]

    if qua_vars is not None:
        if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
            raise ValueError(
                f"InOutSingleChannel.measure received kwarg 'qua_vars' "
                f"which is not a tuple of two QUA variables. Received {qua_vars=}"
            )
    else:
        qua_vars = [declare(fixed) for _ in range(2)]

    if amplitude_scale is not None:
        if not isinstance(amplitude_scale, _PulseAmp):
            amplitude_scale = amp(amplitude_scale)
        pulse_name *= amplitude_scale

    integration_weight_labels = list(pulse.integration_weights_mapping)
    measure(
        pulse_name,
        self.name,
        stream,
        demod.full(integration_weight_labels[0], qua_vars[0], "out1"),
        demod.full(integration_weight_labels[1], qua_vars[1], "out1"),
    )
    return tuple(qua_vars)

measure_accumulated(pulse_name, amplitude_scale=None, num_segments=None, segment_length=None, qua_vars=None, stream=None)

Perform an accumulated demodulation measurement on this channel.

Parameters:

Name	Type	Description	Default
pulse_name	str	The name of the pulse to play. Should be registered in self.operations.	required
amplitude_scale	(float, _PulseAmp)	Amplitude scale of the pulse. Can be either a float, or qua.amp(float).	None
num_segments	int	The number of segments to accumulate. Should either specify this or segment_length.	None
segment_length	int	The length of the segment to accumulate. Should either specify this or num_segments.	None
qua_vars	Tuple[QuaVariableType, ...]	Two QUA variables to store the I, Q measurement results. If not provided, new variables will be declared and returned.	None
stream	Optional[StreamType]	The stream to save the measurement result to. If not provided, the raw ADC signal will not be streamed.	None

Returns:

Type	Description
Tuple[QuaVariableType, QuaVariableType]	I, Q: The QUA variables used to store the measurement results. If provided as input, the same variables will be returned. If not provided, new variables will be declared and returned.

Raises:

Type	Description
ValueError	If both num_segments and segment_length are provided, or if neither are provided.
ValueError	If qua_vars is provided and is not a tuple of two QUA variables.

Source code in quam/components/channels.py

def measure_accumulated(
    self,
    pulse_name: str,
    amplitude_scale: Union[float, AmpValuesType] = None,
    num_segments: int = None,
    segment_length: int = None,
    qua_vars: Tuple[QuaVariableType, ...] = None,
    stream=None,
) -> Tuple[QuaVariableType, QuaVariableType]:
    """Perform an accumulated demodulation measurement on this channel.

    Args:
        pulse_name (str): The name of the pulse to play. Should be registered in
            `self.operations`.
        amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
            Can be either a float, or qua.amp(float).
        num_segments (int): The number of segments to accumulate.
            Should either specify this or `segment_length`.
        segment_length (int): The length of the segment to accumulate.
            Should either specify this or `num_segments`.
        qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
            variables to store the I, Q measurement results.
            If not provided, new variables will be declared and returned.
        stream (Optional[StreamType]): The stream to save the measurement result to.
            If not provided, the raw ADC signal will not be streamed.

    Returns:
        I, Q: The QUA variables used to store the measurement results.
            If provided as input, the same variables will be returned.
            If not provided, new variables will be declared and returned.

    Raises:
        ValueError: If both `num_segments` and `segment_length` are provided, or if
            neither are provided.
        ValueError: If `qua_vars` is provided and is not a tuple of two QUA
            variables.
    """
    pulse: BaseReadoutPulse = self.operations[pulse_name]

    if num_segments is None and segment_length is None:
        raise ValueError(
            "InOutSingleChannel.measure_accumulated requires either 'segment_length' "
            "or 'num_segments' to be provided."
        )
    elif num_segments is not None and segment_length is not None:
        raise ValueError(
            "InOutSingleChannel.measure_accumulated received both 'segment_length' "
            "and 'num_segments'. Please provide only one."
        )
    elif num_segments is None:
        num_segments = int(pulse.length / (4 * segment_length))  # Number of slices
    elif segment_length is None:
        segment_length = int(pulse.length / (4 * num_segments))

    if qua_vars is not None:
        if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
            raise ValueError(
                f"InOutSingleChannel.measure_accumulated received kwarg 'qua_vars' "
                f"which is not a tuple of two QUA variables. Received {qua_vars=}"
            )
    else:
        qua_vars = [declare(fixed, size=num_segments) for _ in range(2)]

    if amplitude_scale is not None:
        if not isinstance(amplitude_scale, _PulseAmp):
            amplitude_scale = amp(amplitude_scale)
        pulse_name *= amplitude_scale

    integration_weight_labels = list(pulse.integration_weights_mapping)
    measure(
        pulse_name,
        self.name,
        stream,
        demod.accumulated(
            integration_weight_labels[0], qua_vars[0], segment_length, "out1"
        ),
        demod.accumulated(
            integration_weight_labels[1], qua_vars[1], segment_length, "out1"
        ),
    )
    return tuple(qua_vars)

measure_sliced(pulse_name, amplitude_scale=None, num_segments=None, segment_length=None, qua_vars=None, stream=None)

Perform an accumulated demodulation measurement on this channel.

Parameters:

Name	Type	Description	Default
pulse_name	str	The name of the pulse to play. Should be registered in self.operations.	required
amplitude_scale	(float, _PulseAmp)	Amplitude scale of the pulse. Can be either a float, or qua.amp(float).	None
num_segments	int	The number of segments to accumulate. Should either specify this or segment_length.	None
segment_length	int	The length of the segment to accumulate. Should either specify this or num_segments.	None
qua_vars	Tuple[QuaVariableType, ...]	Two QUA variables to store the I, Q measurement results. If not provided, new variables will be declared and returned.	None
stream	Optional[StreamType]	The stream to save the measurement result to. If not provided, the raw ADC signal will not be streamed.	None

Returns:

Type	Description
Tuple[QuaVariableType, QuaVariableType]	I, Q: The QUA variables used to store the measurement results. If provided as input, the same variables will be returned. If not provided, new variables will be declared and returned.

Raises:

Type	Description
ValueError	If both num_segments and segment_length are provided, or if neither are provided.
ValueError	If qua_vars is provided and is not a tuple of two QUA variables.

Source code in quam/components/channels.py

def measure_sliced(
    self,
    pulse_name: str,
    amplitude_scale: Union[float, AmpValuesType] = None,
    num_segments: int = None,
    segment_length: int = None,
    qua_vars: Tuple[QuaVariableType, ...] = None,
    stream=None,
) -> Tuple[QuaVariableType, QuaVariableType]:
    """Perform an accumulated demodulation measurement on this channel.

    Args:
        pulse_name (str): The name of the pulse to play. Should be registered in
            `self.operations`.
        amplitude_scale (float, _PulseAmp): Amplitude scale of the pulse.
            Can be either a float, or qua.amp(float).
        num_segments (int): The number of segments to accumulate.
            Should either specify this or `segment_length`.
        segment_length (int): The length of the segment to accumulate.
            Should either specify this or `num_segments`.
        qua_vars (Tuple[QuaVariableType, ...], optional): Two QUA
            variables to store the I, Q measurement results.
            If not provided, new variables will be declared and returned.
        stream (Optional[StreamType]): The stream to save the measurement result to.
            If not provided, the raw ADC signal will not be streamed.

    Returns:
        I, Q: The QUA variables used to store the measurement results.
            If provided as input, the same variables will be returned.
            If not provided, new variables will be declared and returned.

    Raises:
        ValueError: If both `num_segments` and `segment_length` are provided, or if
            neither are provided.
        ValueError: If `qua_vars` is provided and is not a tuple of two QUA
            variables.
    """
    pulse: BaseReadoutPulse = self.operations[pulse_name]

    if num_segments is None and segment_length is None:
        raise ValueError(
            "InOutSingleChannel.measure_sliced requires either 'segment_length' "
            "or 'num_segments' to be provided."
        )
    elif num_segments is not None and segment_length is not None:
        raise ValueError(
            "InOutSingleChannel.measure_sliced received both 'segment_length' "
            "and 'num_segments'. Please provide only one."
        )
    elif num_segments is None:
        num_segments = int(pulse.length / (4 * segment_length))  # Number of slices
    elif segment_length is None:
        segment_length = int(pulse.length / (4 * num_segments))

    if qua_vars is not None:
        if not isinstance(qua_vars, Sequence) or len(qua_vars) != 2:
            raise ValueError(
                f"InOutSingleChannel.measure_sliced received kwarg 'qua_vars' "
                f"which is not a tuple of two QUA variables. Received {qua_vars=}"
            )
    else:
        qua_vars = [declare(fixed, size=num_segments) for _ in range(2)]

    if amplitude_scale is not None:
        if not isinstance(amplitude_scale, _PulseAmp):
            amplitude_scale = amp(amplitude_scale)
        pulse_name *= amplitude_scale

    integration_weight_labels = list(pulse.integration_weights_mapping)
    measure(
        pulse_name,
        self.name,
        stream,
        demod.sliced(
            integration_weight_labels[0], qua_vars[0], segment_length, "out1"
        ),
        demod.sliced(
            integration_weight_labels[1], qua_vars[1], segment_length, "out1"
        ),
    )
    return tuple(qua_vars)

InSingleOutIQChannel

Bases: IQChannel, InSingleChannel

QuAM component for an IQ output channel with a single input.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "readout") and value is a ReadoutPulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output_I	Tuple[str, int]	Channel I output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_Q	Tuple[str, int]	Channel Q output port from the OPX perspective, a tuple of (controller_name, port).	required
opx_output_offset_I	float	The offset of the I channel. Default is 0.	required
opx_output_offset_Q	float	The offset of the Q channel. Default is 0.	required
opx_input	Tuple[str, int]	Channel input port from OPX perspective, a tuple of (controller_name, port).	required
opx_input_offset	float	DC offset for the input port.	required
intermediate_frequency	float	Intermediate frequency of the mixer. Default is 0.0	required
LO_frequency	float	Local oscillator frequency. Default is the LO frequency of the frequency converter up component.	required
RF_frequency	float	RF frequency of the mixer. By default, the RF frequency is inferred by adding the LO frequency and the intermediate frequency.	required
frequency_converter_up	FrequencyConverter	Frequency converter QuAM component for the IQ output.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class InSingleOutIQChannel(IQChannel, InSingleChannel):
    """QuAM component for an IQ output channel with a single input.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "readout") and value is a
            ReadoutPulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output_I (Tuple[str, int]): Channel I output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_Q (Tuple[str, int]): Channel Q output port from the OPX perspective,
            a tuple of (controller_name, port).
        opx_output_offset_I float: The offset of the I channel. Default is 0.
        opx_output_offset_Q float: The offset of the Q channel. Default is 0.
        opx_input (Tuple[str, int]): Channel input port from OPX perspective,
            a tuple of (controller_name, port).
        opx_input_offset (float): DC offset for the input port.
        intermediate_frequency (float): Intermediate frequency of the mixer.
            Default is 0.0
        LO_frequency (float): Local oscillator frequency. Default is the LO frequency
            of the frequency converter up component.
        RF_frequency (float): RF frequency of the mixer. By default, the RF frequency
            is inferred by adding the LO frequency and the intermediate frequency.
        frequency_converter_up (FrequencyConverter): Frequency converter QuAM component
            for the IQ output.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    pass

MWChannel

Bases: Channel

QuAM component for a MW FEM output channel

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output	MWFEMAnalogOutputPort	Channel output port from the OPX perspective.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required
upconverter	int	The upconverter to use. Default is 1.	required
time_of_flight	int	Round-trip signal duration in nanoseconds.	required
smearing	int	Additional window of ADC integration in nanoseconds. Used to account for signal smearing.	required

Source code in quam/components/channels.py

@quam_dataclass
class MWChannel(Channel):
    """QuAM component for a MW FEM output channel

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output (MWFEMAnalogOutputPort): Channel output port from the OPX perspective.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
        upconverter (int): The upconverter to use. Default is 1.
        time_of_flight (int): Round-trip signal duration in nanoseconds.
        smearing (int): Additional window of ADC integration in nanoseconds.
            Used to account for signal smearing.
    """

    opx_output: MWFEMAnalogOutputPort
    upconverter: int = 1

    def apply_to_config(self, config: Dict) -> None:
        super().apply_to_config(config)

        element_config = config["elements"][self.name]
        element_config["MWInput"] = {
            "port": self.opx_output.port_tuple,
            "upconverter": self.upconverter
        }

SingleChannel

Bases: Channel

QuAM component for a single (not IQ) output channel.

Parameters:

Name	Type	Description	Default
operations	Dict[str, Pulse]	A dictionary of pulses to be played on this channel. The key is the pulse label (e.g. "X90") and value is a Pulse.	required
id	(str, int)	The id of the channel, used to generate the name. Can be a string, or an integer in which case it will add Channel._default_label.	required
opx_output	Tuple[str, int]	Channel output port from the OPX perspective, a tuple of (controller_name, port).	required
filter_fir_taps	List[float]	FIR filter taps for the output port.	required
filter_iir_taps	List[float]	IIR filter taps for the output port.	required
opx_output_offset	float	DC offset for the output port.	required
intermediate_frequency	float	Intermediate frequency of OPX output, default is None.	required

Source code in quam/components/channels.py

@quam_dataclass
class SingleChannel(Channel):
    """QuAM component for a single (not IQ) output channel.

    Args:
        operations (Dict[str, Pulse]): A dictionary of pulses to be played on this
            channel. The key is the pulse label (e.g. "X90") and value is a Pulse.
        id (str, int): The id of the channel, used to generate the name.
            Can be a string, or an integer in which case it will add
            `Channel._default_label`.
        opx_output (Tuple[str, int]): Channel output port from the OPX perspective,
            a tuple of (controller_name, port).
        filter_fir_taps (List[float]): FIR filter taps for the output port.
        filter_iir_taps (List[float]): IIR filter taps for the output port.
        opx_output_offset (float): DC offset for the output port.
        intermediate_frequency (float): Intermediate frequency of OPX output, default
            is None.
    """

    opx_output: Union[Tuple[str, int], Tuple[str, int, int], LFAnalogOutputPort]
    filter_fir_taps: List[float] = None
    filter_iir_taps: List[float] = None

    opx_output_offset: float = None

    def set_dc_offset(self, offset: QuaNumberType):
        """Set the DC offset of an element's input to the given value.
        This value will remain the DC offset until changed or until the Quantum Machine
        is closed.

        Args:
            offset (QuaNumberType): The DC offset to set the input to.
                This is limited by the OPX output voltage range.
                The number can be a QUA variable
        """
        set_dc_offset(element=self.name, element_input="single", offset=offset)

    def apply_to_config(self, config: dict):
        """Adds this SingleChannel to the QUA configuration.

        See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
        for details.
        """
        # Add pulses & waveforms
        super().apply_to_config(config)

        if str_ref.is_reference(self.name):
            raise AttributeError(
                f"Channel {self.get_reference()} cannot be added to the config because"
                " it doesn't have a name. Either set channel.id to a string or"
                " integer, or channel should be an attribute of another QuAM component"
                " with a name."
            )

        element_config = config["elements"][self.name]

        filter_fir_taps = self.filter_fir_taps
        if filter_fir_taps is not None:
            filter_fir_taps = list(filter_fir_taps)
        filter_iir_taps = self.filter_iir_taps
        if filter_iir_taps is not None:
            filter_iir_taps = list(filter_iir_taps)

        if isinstance(self.opx_output, LFAnalogOutputPort):
            opx_port = self.opx_output
        elif len(self.opx_output) == 2:
            opx_port = OPXPlusAnalogOutputPort(
                *self.opx_output,
                offset=self.opx_output_offset,
                feedforward_filter=filter_fir_taps,
                feedback_filter=filter_iir_taps,
            )
            opx_port.apply_to_config(config)
        else:
            opx_port = LFFEMAnalogOutputPort(
                *self.opx_output,
                offset=self.opx_output_offset,
                feedforward_filter=filter_fir_taps,
                feedback_filter=filter_iir_taps,
            )
            opx_port.apply_to_config(config)

        element_config["singleInput"] = {"port": opx_port.port_tuple}

apply_to_config(config)

Adds this SingleChannel to the QUA configuration.

See QuamComponent.apply_to_config for details.

Source code in quam/components/channels.py

def apply_to_config(self, config: dict):
    """Adds this SingleChannel to the QUA configuration.

    See [`QuamComponent.apply_to_config`][quam.core.quam_classes.QuamComponent.apply_to_config]
    for details.
    """
    # Add pulses & waveforms
    super().apply_to_config(config)

    if str_ref.is_reference(self.name):
        raise AttributeError(
            f"Channel {self.get_reference()} cannot be added to the config because"
            " it doesn't have a name. Either set channel.id to a string or"
            " integer, or channel should be an attribute of another QuAM component"
            " with a name."
        )

    element_config = config["elements"][self.name]

    filter_fir_taps = self.filter_fir_taps
    if filter_fir_taps is not None:
        filter_fir_taps = list(filter_fir_taps)
    filter_iir_taps = self.filter_iir_taps
    if filter_iir_taps is not None:
        filter_iir_taps = list(filter_iir_taps)

    if isinstance(self.opx_output, LFAnalogOutputPort):
        opx_port = self.opx_output
    elif len(self.opx_output) == 2:
        opx_port = OPXPlusAnalogOutputPort(
            *self.opx_output,
            offset=self.opx_output_offset,
            feedforward_filter=filter_fir_taps,
            feedback_filter=filter_iir_taps,
        )
        opx_port.apply_to_config(config)
    else:
        opx_port = LFFEMAnalogOutputPort(
            *self.opx_output,
            offset=self.opx_output_offset,
            feedforward_filter=filter_fir_taps,
            feedback_filter=filter_iir_taps,
        )
        opx_port.apply_to_config(config)

    element_config["singleInput"] = {"port": opx_port.port_tuple}

set_dc_offset(offset)

Set the DC offset of an element's input to the given value. This value will remain the DC offset until changed or until the Quantum Machine is closed.

Parameters:

Name	Type	Description	Default
offset	QuaNumberType	The DC offset to set the input to. This is limited by the OPX output voltage range. The number can be a QUA variable	required

Source code in quam/components/channels.py

def set_dc_offset(self, offset: QuaNumberType):
    """Set the DC offset of an element's input to the given value.
    This value will remain the DC offset until changed or until the Quantum Machine
    is closed.

    Args:
        offset (QuaNumberType): The DC offset to set the input to.
            This is limited by the OPX output voltage range.
            The number can be a QUA variable
    """
    set_dc_offset(element=self.name, element_input="single", offset=offset)

StickyChannelAddon

Bases: QuamComponent

Addon to make channels sticky.

Parameters:

Name	Type	Description	Default
duration	int	The ramp to zero duration, in ns.	required
enabled	bool	If False, the sticky parameters are not applied. Default is True.	required
analog	bool	If False, the sticky parameters are not applied to analog outputs. Default is True.	required
digital	bool	If False, the sticky parameters are not applied to digital outputs. Default is True.	required

Source code in quam/components/channels.py

@quam_dataclass
class StickyChannelAddon(QuamComponent):
    """Addon to make channels sticky.

    Args:
        duration (int): The ramp to zero duration, in ns.
        enabled (bool, optional): If False, the sticky parameters are not applied.
            Default is True.
        analog (bool, optional): If False, the sticky parameters are not applied to
            analog outputs. Default is True.
        digital (bool, optional): If False, the sticky parameters are not applied to
            digital outputs. Default is True.
    """

    duration: int
    enabled: bool = True
    analog: bool = True
    digital: bool = True

    @property
    def channel(self) -> Optional["Channel"]:
        """If the parent is a channel, returns the parent, otherwise returns None."""
        if isinstance(self.parent, Channel):
            return self.parent
        else:
            return

    @property
    def config_settings(self):
        if self.channel is not None:
            return {"after": [self.channel]}

    def apply_to_config(self, config: dict) -> None:
        if self.channel is None:
            return

        if not self.enabled:
            return

        config["elements"][self.channel.name]["sticky"] = {
            "analog": self.analog,
            "digital": self.digital,
            "duration": self.duration,
        }

channel: Optional[Channel] property

If the parent is a channel, returns the parent, otherwise returns None.