laboneq_applications.contrib.experiments.signal_propagation_delay

This module defines the signal propagation delay experiment.

In this experiment, we sweep the readout integration delay of a measurement to optimize the time delay between measure and acquire.

The signal propagation delay experiment has the following pulse sequence:

[ measure ] --- [ readout integration delay ] --- [acquire]

This experiment only supports 1 qubit at the time.

create_experiment(qpu, qubit, delays, measure_delay=None, options=None)

Creates an Signal Propagation Delay Experiment.

Parameters:

Name	Type	Description	Default
qpu	QPU	The qpu consisting of the original qubits and quantum operations.	required
qubit	QuantumElement	The qubit to run the experiments on.	required
delays	QubitSweepPoints	The readout integration delays to sweep over for the readout pulse. Must be a list of numbers or an array.	required
measure_delay	float | None	Delay between subsequent measurements.	None
options	TuneupExperimentOptions | None	The options for building the experiment. See [TuneupExperimentOptions] and [BaseExperimentOptions] for accepted options. Overwrites the options from [TuneupExperimentOptions] and [BaseExperimentOptions].	None

Returns:

Name	Type	Description
experiment	Experiment	The generated LabOne Q experiment instance to be compiled and executed.

Example

options = {
    "count": 10,
}
options = TuneupExperimentOptions(**options)
setup = DeviceSetup()
qpu = QPU(
    qubits=[TunableTransmonQubit("q0"), TunableTransmonQubit("q1")],
    quantum_operations=TunableTransmonOperations(),
)
temp_qubits = qpu.copy_qubits()
create_experiment(
    qpu=qpu,
    qubit=temp_qubits[0],
    delays=np.linspace(0e9, 100e9, 51),
    options=options,
)

experiment_workflow(session, qpu, qubit, delays, measure_delay=None, temporary_parameters=None, options=None)

The Signal Propagation Delay Workflow.

The workflow consists of the following steps:

• create_experiment
• compile_experiment
• run_experiment
• analysis_workflow
• update_qpu

Changed in version 26.1.0.

The temporary_parameters positional argument was added in the penultimate position. Note that this is a breaking change if calling the experiment workflow with the options positional argument.

Deprecated in version 26.1.0.

The qubit argument of type QuantumElement is deprecated. Please pass qubit of type str instead, i.e., the quantum element UID instead of the quantum element instance.

Parameters:

Name	Type	Description	Default
session	Session	The connected session to use for running the experiment.	required
qpu	QPU	The qpu consisting of the original qubits and quantum operations.	required
qubit	QuantumElement | str	The qubit to run the experiment on, passed by UID. It can be only a single qubit coupled to a resonator.	required
delays	QubitSweepPoints	The readout integration delays to sweep over for the readout pulse. Must be a list of numbers or an array.	required
measure_delay	float | None	Delay between subsequent measurements.	None
temporary_parameters	dict[str, dict | QuantumParameters] | None	The temporary parameters to update the qubit with.	None
options	TuneUpWorkflowOptions | None	The options for building the workflow. In addition to options from [WorkflowOptions], the following custom options are supported: - create_experiment: The options for creating the experiment.	None

Returns:

Name	Type	Description
result	None	The result of the workflow.

Example

options = SpectroscopyWorkflowOptions()
options.create_experiment.count = 10
qpu = QPU(
    qubit=[TunableTransmonQubit("q0"), TunableTransmonQubit("q1")],
    quantum_operations=TunableTransmonOperations(),
)
temp_qubits = qpu.copy_qubits()
result = run(
    session=session,
    qpu=qpu,
    qubit=temp_qubits[0],
    delays=np.linspace(0e-9, 100e-9, 51),
    options=options,
)