Source code for quantify_scheduler.device_under_test.transmon_element

# Repository: https://gitlab.com/quantify-os/quantify-scheduler
# Licensed according to the LICENCE file on the main branch
"""The module contains definitions related to transmon elements."""
from typing import Any, Dict, Tuple
import math

from qcodes.instrument import InstrumentChannel
from qcodes.instrument.base import InstrumentBase
from qcodes.instrument.parameter import (
    ManualParameter,
    Parameter,
)
from qcodes.utils import validators
from quantify_scheduler.backends.graph_compilation import (
    DeviceCompilationConfig,
    OperationCompilationConfig,
)
from quantify_scheduler.helpers.validators import Numbers, _Hashable
from quantify_scheduler.device_under_test.device_element import DeviceElement
from quantify_scheduler.operations import (
    pulse_factories,
    pulse_library,
    measurement_factories,
)


[docs] class Ports(InstrumentChannel): """Submodule containing the ports.""" def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name)
[docs] self.microwave = Parameter( name="microwave", instrument=self, initial_cache_value=kwargs.get("microwave", f"{parent.name}:mw"), set_cmd=False, )
"""Name of the element's microwave port."""
[docs] self.flux = Parameter( name="flux", instrument=self, initial_cache_value=kwargs.get("flux", f"{parent.name}:fl"), set_cmd=False, )
"""Name of the element's flux port."""
[docs] self.readout = Parameter( name="readout", instrument=self, initial_cache_value=kwargs.get("readout", f"{parent.name}:res"), set_cmd=False, )
"""Name of the element's readout port."""
[docs] class ClocksFrequencies(InstrumentChannel): """Submodule containing the clock frequencies specifying the transitions to address.""" def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name)
[docs] self.f01 = ManualParameter( name="f01", instrument=self, label="Qubit frequency", unit="Hz", initial_value=kwargs.get("f01", math.nan), vals=Numbers(min_value=0, max_value=1e12, allow_nan=True), )
"""Frequency of the 01 clock"""
[docs] self.f12 = ManualParameter( name="f12", instrument=self, label="Frequency of the |1>-|2> transition", unit="Hz", initial_value=kwargs.get("f12", math.nan), vals=Numbers(min_value=0, max_value=1e12, allow_nan=True), )
"""Frequency of the 12 clock"""
[docs] self.readout = ManualParameter( name="readout", instrument=self, label="Readout frequency", unit="Hz", initial_value=kwargs.get("readout", math.nan), vals=Numbers(min_value=0, max_value=1e12, allow_nan=True), )
"""Frequency of the ro clock. """
[docs] class IdlingReset(InstrumentChannel): """Submodule containing parameters for doing a reset by idling.""" def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name)
[docs] self.duration = ManualParameter( name="duration", instrument=self, initial_value=kwargs.get("duration", 200e-6), unit="s", vals=validators.Numbers(min_value=0, max_value=1), )
"""Duration of the passive qubit reset (initialization by relaxation)."""
[docs] class RxyDRAG(InstrumentChannel): """ Submodule containing parameters for performing an Rxy operation. The Rxy operation uses a DRAG pulse. """ def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name)
[docs] self.amp180 = ManualParameter( name="amp180", instrument=self, label=r"$\pi-pulse amplitude$", initial_value=kwargs.get("amp180", math.nan), unit="", vals=Numbers(min_value=-10, max_value=10, allow_nan=True), )
r"""Amplitude required to perform a $\pi$ pulse."""
[docs] self.motzoi = ManualParameter( name="motzoi", instrument=self, initial_value=kwargs.get("motzoi", 0), unit="", vals=validators.Numbers(min_value=-1, max_value=1), )
"""Ratio between the Gaussian Derivative (D) and Gaussian (G) components of the DRAG pulse."""
[docs] self.duration = ManualParameter( name="duration", instrument=self, initial_value=kwargs.get("duration", 20e-9), unit="s", vals=validators.Numbers(min_value=0, max_value=1), )
"""Duration of the control pulse.""" self.add_submodule( name="reference_magnitude", submodule=ReferenceMagnitude( parent=self, name="reference_magnitude", dBm=kwargs.get("reference_magnitude_dBm", math.nan), V=kwargs.get("reference_magnitude_V", math.nan), A=kwargs.get("reference_magnitude_A", math.nan), ), )
[docs] class DispersiveMeasurement(InstrumentChannel): """ Submodule containing parameters to perform a measurement. The measurement that is performed is using :func:`~quantify_scheduler.operations.measurement_factories.dispersive_measurement`. """ def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name) pulse_types = validators.Enum("SquarePulse")
[docs] self.pulse_type = ManualParameter( name="pulse_type", instrument=self, initial_value=kwargs.get("pulse_type", "SquarePulse"), vals=pulse_types, )
"""Envelope function that defines the shape of the readout pulse prior to modulation."""
[docs] self.pulse_amp = ManualParameter( name="pulse_amp", instrument=self, initial_value=kwargs.get("pulse_amp", 0.25), unit="", vals=validators.Numbers(min_value=0, max_value=1), )
"""Amplitude of the readout pulse."""
[docs] self.pulse_duration = ManualParameter( name="pulse_duration", instrument=self, initial_value=kwargs.get("pulse_duration", 300e-9), unit="s", vals=validators.Numbers(min_value=0, max_value=1), )
"""Duration of the readout pulse."""
[docs] self.acq_channel = ManualParameter( name="acq_channel", instrument=self, initial_value=kwargs.get("acq_channel", 0), unit="", vals=_Hashable(), )
"""Acquisition channel of to this device element."""
[docs] self.acq_delay = ManualParameter( name="acq_delay", instrument=self, initial_value=kwargs.get("acq_delay", 0), unit="s", # in principle the values should be a few 100 ns but the validator is here # only to protect against silly typos that lead to out of memory errors. vals=validators.Numbers(min_value=0, max_value=100e-6), )
"""Delay between the start of the readout pulse and the start of the acquisition. Note that some hardware backends do not support starting a pulse and the acquisition in the same clock cycle making 0 delay an invalid value."""
[docs] self.integration_time = ManualParameter( name="integration_time", instrument=self, initial_value=kwargs.get("integration_time", 1e-6), unit="s", # in principle the values should be a few us but the validator is here # only to protect against silly typos that lead to out of memory errors. vals=validators.Numbers(min_value=0, max_value=100e-6), )
"""Integration time for the readout acquisition."""
[docs] self.reset_clock_phase = ManualParameter( name="reset_clock_phase", instrument=self, initial_value=kwargs.get("reset_clock_phase", True), vals=validators.Bool(), )
"""The phase of the measurement clock will be reset by the control hardware at the start of each measurement if ``reset_clock_phase=True``."""
[docs] self.acq_weights_a = ManualParameter( name="acq_weights_a", instrument=self, initial_value=kwargs.get("acq_weights_a", None), vals=validators.Arrays(), )
"""The weights for the I path. Used when specifying the ``"NumericalSeparatedWeightedIntegration"`` or the ``"NumericalWeightedIntegration"`` acquisition protocol."""
[docs] self.acq_weights_b = ManualParameter( name="acq_weights_b", instrument=self, initial_value=kwargs.get("acq_weights_b", None), vals=validators.Arrays(), )
"""The weights for the Q path. Used when specifying the ``"NumericalSeparatedWeightedIntegration"`` or the ``"NumericalWeightedIntegration"`` acquisition protocol."""
[docs] self.acq_weights_sampling_rate = ManualParameter( name="acq_weights_sampling_rate", instrument=self, initial_value=kwargs.get("acq_weights_sampling_rate", None), vals=validators.Numbers(min_value=1, max_value=10e9), )
"""The sample rate of the weights arrays, in Hertz. Used when specifying the ``"NumericalSeparatedWeightedIntegration"`` or the ``"NumericalWeightedIntegration"`` acquisition protocol.""" ro_acq_weight_type_validator = validators.Enum("SSB", "Numerical") self.acq_weight_type = ManualParameter( name="acq_weight_type", instrument=self, initial_value=kwargs.get("acq_weight_type", "SSB"), vals=ro_acq_weight_type_validator, ) self.add_submodule( name="reference_magnitude", submodule=ReferenceMagnitude( parent=self, name="reference_magnitude", dBm=kwargs.get("reference_magnitude_dBm", math.nan), V=kwargs.get("reference_magnitude_V", math.nan), A=kwargs.get("reference_magnitude_A", math.nan), ), )
[docs] self.acq_rotation = ManualParameter( "acq_rotation", instrument=self, initial_value=kwargs.get("acq_rotation", 0), )
"""The phase rotation in degrees required to perform thresholded acquisition. Note that rotation is performed before the threshold. For more details see :class:`~quantify_scheduler.operations.acquisition_library.ThresholdedAcquisition`.""" # noqa
[docs] self.acq_threshold = ManualParameter( "acq_threshold", instrument=self, initial_value=kwargs.get("acq_threshold", 0), )
"""The threshold value against which the rotated and integrated result is compared against. For more details see :class:`~quantify_scheduler.operations.acquisition_library.ThresholdedAcquisition`.""" # noqa
[docs] class ReferenceMagnitude(InstrumentChannel): """ Submodule which describes an amplitude / power reference level. The reference level is with respect to which pulse amplitudes are defined. This can be specified in units of "V", "dBm" or "A". Only one unit parameter may have a defined value at a time. If we call the set method for any given unit parameter, all other unit parameters will be automatically set to nan. """ def __init__(self, parent: InstrumentBase, name: str, **kwargs: Any) -> None: super().__init__(parent=parent, name=name) self.dBm = Parameter( "reference_magnitude_dBm", instrument=self, initial_value=kwargs.get("dBm", math.nan), set_cmd=lambda value: self._set_parameter(value, "reference_magnitude_dBm"), unit="dBm", vals=Numbers(allow_nan=True), ) self.V = Parameter( "reference_magnitude_V", instrument=self, initial_value=kwargs.get("V", math.nan), set_cmd=lambda value: self._set_parameter(value, "reference_magnitude_V"), unit="V", vals=Numbers(allow_nan=True), ) self.A = Parameter( "reference_magnitude_A", instrument=self, initial_value=kwargs.get("A", math.nan), set_cmd=lambda value: self._set_parameter(value, "reference_magnitude_A"), unit="A", vals=Numbers(allow_nan=True), )
[docs] def _set_parameter(self, value: float, parameter: str): """ Set the value of one of the unit parameters. All the other unit parameters are set to nan. """ for name, par in self.parameters.items(): if name == parameter: par.cache.set(value) elif not math.isnan(value): par.cache.set(math.nan)
[docs] def get_val_unit(self) -> Tuple[float, str]: """ Get the value of the amplitude reference and its unit, if one is defined. If a value is defined for more than one unit, raise an exception. Returns ------- value The value of the amplitude reference unit The unit in which this value is specified """ value_and_unit = math.nan, "" for param in self.parameters.values(): if not math.isnan(value := param()): if math.isnan(value_and_unit[0]): value_and_unit = value, param.unit # type: ignore else: raise ValueError( "ReferenceMagnitude values defined for multiple units. Only " "one unit may be defined at a time." ) return value_and_unit
[docs] class BasicTransmonElement(DeviceElement): """ A device element representing a single fixed-frequency transmon qubit. The qubit is coupled to a readout resonator. Parameters ---------- name The name of the transmon element. kwargs Can be used to pass submodule initialization data by using submodule name as keyword and as argument a dictionary containing the submodule parameter names and their value. """ def __init__(self, name: str, **kwargs): submodules_to_add = { "reset": IdlingReset, "rxy": RxyDRAG, "measure": DispersiveMeasurement, "ports": Ports, "clock_freqs": ClocksFrequencies, } submodule_data = { sub_name: kwargs.pop(sub_name, {}) for sub_name in submodules_to_add.keys() } super().__init__(name, **kwargs) for sub_name, sub_class in submodules_to_add.items(): self.add_submodule( sub_name, sub_class( parent=self, name=sub_name, **submodule_data.get(sub_name, {}) ), )
[docs] self.reset: IdlingReset
"""Submodule :class:`~.IdlingReset`."""
[docs] self.rxy: RxyDRAG
"""Submodule :class:`~.RxyDRAG`."""
[docs] self.measure: DispersiveMeasurement
"""Submodule :class:`~.DispersiveMeasurement`."""
[docs] self.ports: Ports
"""Submodule :class:`~.Ports`."""
[docs] self.clock_freqs: ClocksFrequencies
"""Submodule :class:`~.ClocksFrequencies`."""
[docs] def _generate_config(self) -> Dict[str, Dict[str, OperationCompilationConfig]]: """ Generate part of the device configuration specific to a single qubit. This method is intended to be used when this object is part of a device object containing multiple elements. """ qubit_config = { f"{self.name}": { "reset": OperationCompilationConfig( factory_func=pulse_library.IdlePulse, factory_kwargs={ "duration": self.reset.duration(), }, ), # example of a pulse with a parametrized mapping, using a factory "Rxy": OperationCompilationConfig( factory_func=pulse_factories.rxy_drag_pulse, factory_kwargs={ "amp180": self.rxy.amp180(), "motzoi": self.rxy.motzoi(), "port": self.ports.microwave(), "clock": f"{self.name}.01", "duration": self.rxy.duration(), "reference_magnitude": pulse_library.ReferenceMagnitude.from_parameter( self.rxy.reference_magnitude ), }, gate_info_factory_kwargs=[ "theta", "phi", ], # the keys from the gate info to pass to the factory function ), "Rz": OperationCompilationConfig( factory_func=pulse_factories.phase_shift, factory_kwargs={ "clock": f"{self.name}.01", }, gate_info_factory_kwargs=[ "theta", ], # the keys from the gate info to pass to the factory function ), # the measurement also has a parametrized mapping, and uses a # factory function. "measure": OperationCompilationConfig( factory_func=measurement_factories.dispersive_measurement, factory_kwargs={ "port": self.ports.readout(), "clock": f"{self.name}.ro", "pulse_type": self.measure.pulse_type(), "pulse_amp": self.measure.pulse_amp(), "pulse_duration": self.measure.pulse_duration(), "acq_delay": self.measure.acq_delay(), "acq_duration": self.measure.integration_time(), "acq_channel": self.measure.acq_channel(), "acq_protocol_default": "SSBIntegrationComplex", "reset_clock_phase": self.measure.reset_clock_phase(), "reference_magnitude": pulse_library.ReferenceMagnitude.from_parameter( self.measure.reference_magnitude ), "acq_weights_a": self.measure.acq_weights_a(), "acq_weights_b": self.measure.acq_weights_b(), "acq_weights_sampling_rate": self.measure.acq_weights_sampling_rate(), "acq_rotation": self.measure.acq_rotation(), "acq_threshold": self.measure.acq_threshold(), }, gate_info_factory_kwargs=[ "acq_channel_override", "acq_index", "bin_mode", "acq_protocol", ], ), } } return qubit_config
[docs] def generate_device_config(self) -> DeviceCompilationConfig: """ Generate a valid device config. The config will be used for the quantify-scheduler making use of the :func:`~.circuit_to_device.compile_circuit_to_device` function. This enables the settings of this qubit to be used in isolation. .. note: This config is only valid for single qubit experiments. """ cfg_dict = { "elements": self._generate_config(), "clocks": { f"{self.name}.01": self.clock_freqs.f01(), f"{self.name}.12": self.clock_freqs.f12(), f"{self.name}.ro": self.clock_freqs.readout(), }, "edges": {}, } dev_cfg = DeviceCompilationConfig.model_validate(cfg_dict) return dev_cfg