measurement_factories

A module containing factory functions for measurements on the quantum-device layer.

These factories are used to take a parametrized representation of on a operation and use that to create an instance of the operation itself.

Module Contents

Functions

dispersive_measurement(→ quantify_scheduler.Operation)	Generator function for a standard dispersive measurement.
optical_measurement(→ quantify_scheduler.Operation)	Generator function for an optical measurement with multiple excitation pulses.

dispersive_measurement(pulse_amp: float, pulse_duration: float, port: str, clock: str, acq_duration: float, acq_delay: float, acq_channel: Hashable, acq_channel_override: Hashable | None, acq_index: int, acq_protocol: str | None, pulse_type: Literal[quantify_scheduler.operations.pulse_library.SquarePulse] = 'SquarePulse', bin_mode: quantify_scheduler.enums.BinMode | None = BinMode.AVERAGE, acq_protocol_default: str = 'SSBIntegrationComplex', reset_clock_phase: bool = True, reference_magnitude: quantify_scheduler.operations.pulse_library.ReferenceMagnitude | None = None, acq_weights_a: List[complex] | numpy.ndarray | None = None, acq_weights_b: List[complex] | numpy.ndarray | None = None, acq_weights_sampling_rate: float | None = None, feedback_trigger_label: str | None = None, acq_rotation: float | None = None, acq_threshold: float | None = None) → quantify_scheduler.Operation

Generator function for a standard dispersive measurement.

A dispersive measurement (typically) exists of a pulse being applied to the device followed by an acquisition protocol to interpret the signal coming back from the device.

optical_measurement(pulse_amplitudes: List[float], pulse_durations: List[float], pulse_ports: List[str], pulse_clocks: List[str], acq_duration: float, acq_delay: float, acq_port: str, acq_clock: str, acq_channel: Hashable, acq_channel_override: Hashable | None, acq_index: int, bin_mode: quantify_scheduler.enums.BinMode | None, acq_protocol: Literal[quantify_scheduler.operations.acquisition_library.Trace, quantify_scheduler.operations.acquisition_library.TriggerCount] | None, acq_protocol_default: Literal[quantify_scheduler.operations.acquisition_library.Trace, quantify_scheduler.operations.acquisition_library.TriggerCount], pulse_type: Literal[quantify_scheduler.operations.pulse_library.SquarePulse]) → quantify_scheduler.Operation

Generator function for an optical measurement with multiple excitation pulses.

An optical measurement generates a square pulse in the optical range and uses either the Trace acquisition to return the output of a photon detector as a function of time or the TriggerCount acquisition to return the number of photons that are collected.

All pulses can have different amplitudes, durations, ports and clocks. All pulses start simultaneously. The acquisition can have an acq_delay with respect to the pulses. A negative acq_delay causes the acquisition to be scheduled at time 0 and the pulses at the positive time -acq_delay.

Parameters:

• pulse_amplitudes – list of amplitudes of the corresponding pulses

• pulse_durations – list of durations of the corresponding pulses

• pulse_ports – Port names, where the corresponding pulses are applied

• pulse_clocks – Clock names of the corresponding pulses

• acq_duration – Duration of the acquisition

• acq_delay – Delay between the start of the readout pulse and the start of the acquisition: acq_delay = t0_pulse - t0_acquisition.

• acq_port – Port name of the acquisition

• acq_clock – Clock name of the acquisition

• acq_channel – Default acquisition channel of the device element

• acq_channel_override – Acquisition channel of the operation

• acq_index – Acquisition index as defined in the Schedule

• bin_mode – Describes what is done when data is written to a register that already contains a value. Options are “append” which appends the result to the list. “average” which stores the count value of the new result and the old register value is not currently implemented. None internally resolves to BinMode.APPEND.

• acq_protocol – Acquisition protocol. “Trace” returns a time trace of the collected signal. “TriggerCount” returns the number of times the trigger threshold is surpassed.

• acq_protocol_default – Acquisition protocol if acq_protocol is None

• pulse_type – Shape of the pulse to be generated

Returns:

Operation with the generated pulses and acquisition

Raises:

• ValueError – If first four function arguments do not have the same length.

• NotImplementedError – If an unknown pulse_type or acq_protocol are used.