FakeBackend5QV2

class qiskit.providers.fake_provider.FakeBackend5QV2(bidirectional=True)

Bases: BackendV2

A mock backend that doesn’t implement run() to test compatibility with Terra internals.

Initialize a BackendV2 based backend

Parâmetros:

• provider – An optional backwards reference to the Provider object that the backend is from

• name – An optional name for the backend

• description – An optional description of the backend

• online_date – An optional datetime the backend was brought online

• backend_version – An optional backend version string. This differs from the version attribute as version is for the abstract Backend abstract interface version of the object while backend_version is for versioning the backend itself.

• fields – kwargs for the values to use to override the default options.

Levanta:

AttributeError – If a field is specified that’s outside the backend’s options

Attributes

coupling_map

Return the CouplingMap object

dt

Return the system time resolution of input signals

This is required to be implemented if the backend supports Pulse scheduling.

Retorno:

The input signal timestep in seconds. If the backend doesn’t define dt None will be returned

Tipo de retorno:

dt

dtm

Return the system time resolution of output signals

Retorno:

The output signal timestep in seconds.

Tipo de retorno:

dtm

Levanta:

NotImplementedError – if the backend doesn’t support querying the output signal timestep

instruction_durations

Return the InstructionDurations object.

instruction_schedule_map

Return the InstructionScheduleMap for the instructions defined in this backend’s target.

instructions

A list of Instruction tuples on the backend of the form (instruction, (qubits)

max_circuits

meas_map

Return the grouping of measurements which are multiplexed

This is required to be implemented if the backend supports Pulse scheduling.

Retorno:

The grouping of measurements which are multiplexed

Tipo de retorno:

meas_map

Levanta:

NotImplementedError – if the backend doesn’t support querying the measurement mapping

num_qubits

Return the number of qubits the backend has.

operation_names

A list of instruction names that the backend supports.

operations

A list of Instruction instances that the backend supports.

options

Return the options for the backend

The options of a backend are the dynamic parameters defining how the backend is used. These are used to control the run() method.

provider

Return the backend Provider.

Retorno:

the Provider responsible for the backend.

Tipo de retorno:

Provider

target

version = 2

Methods

acquire_channel(qubit)

Return the acquisition channel for the given qubit.

This is required to be implemented if the backend supports Pulse scheduling.

Retorno:

The Qubit measurement acquisition line.

Tipo de retorno:

AcquireChannel

Levanta:

NotImplementedError – if the backend doesn’t support querying the measurement mapping

control_channel(qubits)

Return the secondary drive channel for the given qubit

This is typically utilized for controlling multiqubit interactions. This channel is derived from other channels.

This is required to be implemented if the backend supports Pulse scheduling.

Parâmetros:

qubits (Iterable[int]) – Tuple or list of qubits of the form (control_qubit, target_qubit).

Retorno:

The multi qubit control line.

Tipo de retorno:

List[ControlChannel]

Levanta:

NotImplementedError – if the backend doesn’t support querying the measurement mapping

drive_channel(qubit)

Return the drive channel for the given qubit.

This is required to be implemented if the backend supports Pulse scheduling.

Retorno:

The Qubit drive channel

Tipo de retorno:

DriveChannel

Levanta:

NotImplementedError – if the backend doesn’t support querying the measurement mapping

measure_channel(qubit)

Return the measure stimulus channel for the given qubit.

This is required to be implemented if the backend supports Pulse scheduling.

Retorno:

The Qubit measurement stimulus line

Tipo de retorno:

MeasureChannel

Levanta:

NotImplementedError – if the backend doesn’t support querying the measurement mapping

qubit_properties(qubit)

Return QubitProperties for a given qubit.

If there are no defined or the backend doesn’t support querying these details this method does not need to be implemented.

Parâmetros:

qubit (int | List[int]) – The qubit to get the QubitProperties object for. This can be a single integer for 1 qubit or a list of qubits and a list of QubitProperties objects will be returned in the same order

Retorno:

The QubitProperties object for the specified qubit. If a list of qubits is provided a list will be returned. If properties are missing for a qubit this can be None.

Tipo de retorno:

qubit_properties

Levanta:

NotImplementedError – if the backend doesn’t support querying the qubit properties

run(run_input, **options)

Run on the backend.

This method returns a Job object that runs circuits. Depending on the backend this may be either an async or sync call. It is at the discretion of the provider to decide whether running should block until the execution is finished or not: the Job class can handle either situation.

Parâmetros:

• run_input (QuantumCircuit or Schedule or ScheduleBlock or list) – An individual or a list of ScheduleBlock, or Schedule objects to run on the backend.

• options – Any kwarg options to pass to the backend for running the config. If a key is also present in the options attribute/object then the expectation is that the value specified will be used instead of what’s set in the options object.

Retorno:

The job object for the run

Tipo de retorno:

Job

set_options(**fields)

Set the options fields for the backend

This method is used to update the options of a backend. If you need to change any of the options prior to running just pass in the kwarg with the new value for the options.

Parâmetros:

fields – The fields to update the options

Levanta:

AttributeError – If the field passed in is not part of the options