qblox_scheduler.schedules.spectroscopy_schedules

Module containing schedules for common spectroscopy experiments.

Functions

heterodyne_spec_sched(...)	Generate a schedule for performing heterodyne spectroscopy.
heterodyne_spec_sched_nco(...)	Generate a batched schedule for performing fast heterodyne spectroscopy
two_tone_spec_sched(...)	Generate a schedule for performing two-tone spectroscopy.
two_tone_spec_sched_nco(...)	Generate a batched schedule for performing fast two-tone spectroscopy using
nv_dark_esr_sched(...)	Generates a schedule for a dark ESR experiment on an NV-center.
nv_dark_esr_sched_nco(...)	Generates a schedule for a dark ESR experiment on an NV-center, in which

Module Contents

heterodyne_spec_sched(pulse_amp: float, pulse_duration: float, frequency: float, acquisition_delay: float, integration_time: float, port: str, clock: str, init_duration: float = 1e-05, repetitions: int = 1, port_out: str | None = None) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generate a schedule for performing heterodyne spectroscopy.

Parameters:

• pulse_amp – Amplitude of the spectroscopy pulse in Volt.

• pulse_duration – Duration of the spectroscopy pulse in seconds.

• frequency – Frequency of the spectroscopy pulse in Hertz.

• acquisition_delay – Start of the data acquisition with respect to the start of the spectroscopy pulse in seconds.

• integration_time – Integration time of the data acquisition in seconds.

• port – Location on the device where the acquisition is performed.

• clock – Reference clock used to track the spectroscopy frequency.

• init_duration – The relaxation time or dead time.

• repetitions – The amount of times the TimeableSchedule will be repeated.

• port_out – Output port on the device where the pulse should be applied. If None, then use the same as port.

heterodyne_spec_sched_nco(pulse_amp: float, pulse_duration: float, frequencies: numpy.ndarray, acquisition_delay: float, integration_time: float, port: str, clock: str, init_duration: float = 1e-05, repetitions: int = 1, port_out: str | None = None) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generate a batched schedule for performing fast heterodyne spectroscopy using the SetClockFrequency operation for doing an NCO sweep.

Parameters:

• pulse_amp – Amplitude of the spectroscopy pulse in Volt.

• pulse_duration – Duration of the spectroscopy pulse in seconds.

• frequencies – Sample frequencies for the spectroscopy pulse in Hertz.

• acquisition_delay – Start of the data acquisition with respect to the start of the spectroscopy pulse in seconds.

• integration_time – Integration time of the data acquisition in seconds.

• port – Location on the device where the acquisition is performed.

• clock – Reference clock used to track the spectroscopy frequency.

• init_duration – The relaxation time or dead time.

• repetitions – The amount of times the TimeableSchedule will be repeated.

• port_out – Output port on the device where the pulse should be applied. If None, then use the same as port.

two_tone_spec_sched(spec_pulse_amp: float, spec_pulse_duration: float, spec_pulse_port: str, spec_pulse_clock: str, spec_pulse_frequency: float, ro_pulse_amp: float, ro_pulse_duration: float, ro_pulse_delay: float, ro_pulse_port: str, ro_pulse_clock: str, ro_pulse_frequency: float, ro_acquisition_delay: float, ro_integration_time: float, init_duration: float = 1e-05, repetitions: int = 1) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generate a schedule for performing two-tone spectroscopy.

Parameters:

• spec_pulse_amp – Amplitude of the spectroscopy pulse in Volt.

• spec_pulse_duration – Duration of the spectroscopy pulse in seconds.

• spec_pulse_port – Location on the device where the spectroscopy pulse should be applied.

• spec_pulse_clock – Reference clock used to track the spectroscopy frequency.

• spec_pulse_frequency – Frequency of the spectroscopy pulse in Hertz.

• ro_pulse_amp – Amplitude of the readout (spectroscopy) pulse in Volt.

• ro_pulse_duration – Duration of the readout (spectroscopy) pulse in seconds.

• ro_pulse_delay – Time between the end of the spectroscopy pulse and the start of the readout (spectroscopy) pulse.

• ro_pulse_port – Location on the device where the readout (spectroscopy) pulse should be applied.

• ro_pulse_clock – Reference clock used to track the readout (spectroscopy) frequency.

• ro_pulse_frequency – Frequency of the readout (spectroscopy) pulse in Hertz.

• ro_acquisition_delay – Start of the data acquisition with respect to the start of the readout pulse in seconds.

• ro_integration_time – Integration time of the data acquisition in seconds.

• init_duration – The relaxation time or dead time.

• repetitions – The amount of times the TimeableSchedule will be repeated.

two_tone_spec_sched_nco(spec_pulse_amp: float, spec_pulse_duration: float, spec_pulse_port: str, spec_pulse_clock: str, spec_pulse_frequencies: numpy.ndarray, ro_pulse_amp: float, ro_pulse_duration: float, ro_pulse_delay: float, ro_pulse_port: str, ro_pulse_clock: str, ro_pulse_frequency: float, ro_acquisition_delay: float, ro_integration_time: float, init_duration: float, repetitions: int = 1) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generate a batched schedule for performing fast two-tone spectroscopy using the SetClockFrequency operation for doing an NCO sweep.

For long-lived qubits, it is advisable to use a small number of repetitions and compensate by doing continuous spectroscopy (low amplitude, long duration pulse with simultaneous long readout).

The “dead-time” between two data points needs to be sufficient to properly reset the qubit. That means that init_duration should be >> T1 (so typically >200us).

Parameters:

• spec_pulse_amp – Amplitude of the spectroscopy pulse in Volt.

• spec_pulse_duration – Duration of the spectroscopy pulse in seconds.

• spec_pulse_port – Location on the device where the spectroscopy pulse should be applied.

• spec_pulse_clock – Reference clock used to track the spectroscopy frequency.

• spec_pulse_frequencies – Sample frequencies for the spectroscopy pulse in Hertz.

• ro_pulse_amp – Amplitude of the readout (spectroscopy) pulse in Volt.

• ro_pulse_duration – Duration of the readout (spectroscopy) pulse in seconds.

• ro_pulse_delay – Time between the end of the spectroscopy pulse and the start of the readout (spectroscopy) pulse.

• ro_pulse_port – Location on the device where the readout (spectroscopy) pulse should be applied.

• ro_pulse_clock – Reference clock used to track the readout (spectroscopy) frequency.

• ro_pulse_frequency – Frequency of the readout (spectroscopy) pulse in Hertz.

• ro_acquisition_delay – Start of the data acquisition with respect to the start of the readout pulse in seconds.

• ro_integration_time – Integration time of the data acquisition in seconds.

• init_duration – The relaxation time or dead time.

• repetitions – The amount of times the TimeableSchedule will be repeated.

nv_dark_esr_sched(qubit: str, repetitions: int = 1) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generates a schedule for a dark ESR experiment on an NV-center.

The spectroscopy frequency is taken from the device element. Please use the clock specified in the spectroscopy_operation entry of the device config.

Parameters:

• qubit – Name of the DeviceElement representing the NV-center.

• repetitions – Number of schedule repetitions.

Returns:

: TimeableSchedule with a single frequency

nv_dark_esr_sched_nco(qubit: str, spec_clock: str, spec_frequencies: numpy.ndarray, repetitions: int = 1) → qblox_scheduler.schedules.schedule.TimeableSchedule

Generates a schedule for a dark ESR experiment on an NV-center, in which the NCO frequency is swept.

Parameters:

• qubit – Name of the DeviceElement representing the NV-center.

• spec_clock – Reference clock of the spectroscopy operation.

• spec_frequencies – Sample frequencies for the spectroscopy pulse in Hertz.

• repetitions – Number of schedule repetitions.

Returns:

: TimeableSchedule with NCO frequency sweeping for spectroscopy operation.