---
title: FakePeekskill (v0.26)
description: API reference for qiskit_ibm_runtime.fake_provider.FakePeekskill in qiskit-ibm-runtime v0.26
source: https://quantum.cloud.ibm.com/docs/en/api/qiskit-ibm-runtime/0.26/fake-provider-fake-peekskill
---

# FakePeekskill

*class* `FakePeekskill`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/backends/peekskill/fake_peekskill.py#L21-L28)

A fake 27 qubit backend.

FakeBackendV2 initializer.

## Attributes

### backend\_name

Default value: `'fake_peekskill'`

### conf\_filename

Default value: `'conf_peekskill.json'`

### coupling\_map

Return the [`CouplingMap`](/docs/api/qiskit/qiskit.transpiler.CouplingMap) object

### defs\_filename

Default value: `'defs_peekskill.json'`

### dirname

Default value: `'/home/runner/work/qiskit-ibm-runtime/qiskit-ibm-runtime/qiskit_ibm_runtime/fake_provider/backends/peekskill'`

### dt

Return the system time resolution of input signals

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

**Return type**

`Optional`\[`float`]

**Returns**

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

### dtm

Return the system time resolution of output signals

**Return type**

`float`

**Returns**

The output signal timestep in seconds.

### instruction\_durations

Return the [`InstructionDurations`](/docs/api/qiskit/qiskit.transpiler.InstructionDurations) object.

### instruction\_schedule\_map

Return the [InstructionScheduleMap](/docs/api/qiskit/1.4/qiskit.pulse.InstructionScheduleMap) for the instructions defined in this backend’s target.

### instructions

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

**Return type**

`List`\[`Tuple`\[[`Instruction`](/docs/api/qiskit/qiskit.circuit.Instruction), `Tuple`\[`int`]]]

### max\_circuits

**Return type**

`None`

### meas\_map

Return the grouping of measurements which are multiplexed This is required to be implemented if the backend supports Pulse scheduling.

**Return type**

`List`\[`List`\[`int`]]

**Returns**

The grouping of measurements which are multiplexed

### num\_qubits

Return the number of qubits the backend has.

**Return type**

`int`

### operation\_names

A list of instruction names that the backend supports.

**Return type**

`List`\[`str`]

### operations

A list of [`Instruction`](/docs/api/qiskit/qiskit.circuit.Instruction) instances that the backend supports.

**Return type**

`List`\[[`Instruction`](/docs/api/qiskit/qiskit.circuit.Instruction)]

### 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()`](#qiskit_ibm_runtime.fake_provider.FakePeekskill.run "qiskit_ibm_runtime.fake_provider.FakePeekskill.run") method.

### props\_filename

Default value: `'props_peekskill.json'`

### provider

Return the backend Provider.

**Returns**

the Provider responsible for the backend.

**Return type**

Provider

### target

A [`qiskit.transpiler.Target`](/docs/api/qiskit/qiskit.transpiler.Target) object for the backend.

**Return type**

Target

### version

Default value: `2`

### name

Name of the backend.

### description

Optional human-readable description.

### online\_date

Date that the backend came online.

### backend\_version

Version of the backend being provided. This is not the same as `BackendV2.version`, which is the version of the `Backend` abstract interface.

## Methods

### acquire\_channel

`acquire_channel(qubit)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L377-L390)

Return the acquisition channel for the given qubit.

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

**Returns**

The Qubit measurement acquisition line.

**Return type**

AcquireChannel

### check\_faulty

`check_faulty(circuit)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L232-L264)

Check if the input circuit uses faulty qubits or edges.

**Parameters**

**circuit** ([`QuantumCircuit`](/docs/api/qiskit/qiskit.circuit.QuantumCircuit)) – Circuit to check.

**Raises**

**ValueError** – If an instruction operating on a faulty qubit or edge is found.

**Return type**

`None`

### configuration

`configuration()`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L228-L230)

Return the backend configuration.

**Return type**

`Union`\[`QasmBackendConfiguration`, `PulseBackendConfiguration`]

### control\_channel

`control_channel(qubits)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L392-L412)

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.

**Parameters**

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

**Returns**

The multi qubit control line.

**Return type**

List\[ControlChannel]

### defaults

`defaults(refresh=False)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L212-L226)

Return the pulse defaults for the backend

**Parameters**

- **refresh** (`bool`) – If `True`, re-retrieve the backend defaults from the
- **file.** (*local*)

**Return type**

`PulseDefaults`

**Returns**

The backend pulse defaults or `None` if the backend does not support pulse.

### drive\_channel

`drive_channel(qubit)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L347-L360)

Return the drive channel for the given qubit.

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

**Returns**

The Qubit drive channel

**Return type**

DriveChannel

### measure\_channel

`measure_channel(qubit)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L362-L375)

Return the measure stimulus channel for the given qubit.

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

**Returns**

The Qubit measurement stimulus line

**Return type**

MeasureChannel

### properties

`properties(refresh=False)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L198-L210)

Return the backend properties

**Parameters**

- **refresh** (`bool`) – If `True`, re-retrieve the backend properties
- **file.** (*from the local*)

**Return type**

`BackendProperties`

**Returns**

The backend properties.

### qubit\_properties

`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.

**Parameters**

**qubit** (`Union`\[`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

**Return type**

`Union`\[[`QubitProperties`](/docs/api/qiskit/qiskit.providers.QubitProperties), `List`\[[`QubitProperties`](/docs/api/qiskit/qiskit.providers.QubitProperties)]]

**Returns**

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`.

**Raises**

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

### refresh

`refresh(service)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L563-L644)

Update the data files from its real counterpart

This method pulls the latest backend data files from their real counterpart and overwrites the corresponding files in the local installation: \* ../fake\_provider/backends/\{backend\_name}/conf\_\{backend\_name}.json \* ../fake\_provider/backends/\{backend\_name}/defs\_\{backend\_name}.json \* ../fake\_provider/backends/\{backend\_name}/props\_\{backend\_name}.json

**The new data files will persist through sessions so the files will stay updated unless they**

are manually reverted locally or when qiskit-ibm-runtime is upgraded/reinstalled.

**Parameters**

**service** ([`QiskitRuntimeService`](/docs/api/qiskit-ibm-runtime/0.26/qiskit-runtime-service "qiskit_ibm_runtime.qiskit_runtime_service.QiskitRuntimeService")) – A `QiskitRuntimeService` instance

**Raises**

- **ValueError** – if the provided service is a non-QiskitRuntimeService instance.
- **Exception** – If the real target doesn’t exist or can’t be accessed

**Return type**

`None`

### run

`run(run_input, **options)`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L414-L475)

Run on the fake backend using a simulator.

This method runs circuit jobs (an individual or a list of QuantumCircuit ) and pulse jobs (an individual or a list of Schedule or ScheduleBlock) using BasicSimulator or Aer simulator and returns a [`Job`](/docs/api/qiskit/qiskit.providers.Job) object.

If qiskit-aer is installed, jobs will be run using AerSimulator with noise model of the fake backend. Otherwise, jobs will be run using BasicSimulator without noise.

Currently noisy simulation of a pulse job is not supported yet in FakeBackendV2.

**Parameters**

- **run\_input** (*QuantumCircuit or Schedule or ScheduleBlock or list*) – An individual or a list of [`QuantumCircuit`](/docs/api/qiskit/qiskit.circuit.QuantumCircuit), [ScheduleBlock](/docs/api/qiskit/1.4/qiskit.pulse.ScheduleBlock), or [Schedule](/docs/api/qiskit/1.4/qiskit.pulse.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.

**Returns**

The job object for the run

**Return type**

Job

**Raises**

**QiskitError** – If a pulse job is supplied and qiskit-aer is not installed.

### set\_options

`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.

**Parameters**

**fields** – The fields to update the options

**Raises**

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

### status

`status()`

[GitHub](https://github.com/Qiskit/qiskit-ibm-runtime/tree/stable/0.26/qiskit_ibm_runtime/fake_provider/fake_backend.py#L180-L196)

Return the backend status.

**Return type**

`BackendStatus`

**Returns**

The status of the backend.