---
title: FakePeekskill (dev version)
description: API reference for qiskit_ibm_runtime.fake_provider.FakePeekskill in the dev version of qiskit-ibm-runtime
in_page_toc_min_heading_level: 1
python_api_type: class
python_api_name: qiskit_ibm_runtime.fake_provider.FakePeekskill
---

# FakePeekskill

<Class id="qiskit_ibm_runtime.fake_provider.FakePeekskill" isDedicatedPage={true} github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/backends/peekskill/fake_peekskill.py#L21-L28" signature="FakePeekskill" modifiers="class">
  Bases: `FakeBackendV2`

  A fake 27 qubit backend.

  FakeBackendV2 initializer.

  ## Attributes

  ### backend\_name

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.backend_name" attributeValue="'fake_peekskill'" />

  ### conf\_filename

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.conf_filename" attributeValue="'conf_peekskill.json'" />

  ### coupling\_map

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.coupling_map">
    Return the [`CouplingMap`](/docs/api/qiskit/qiskit.transpiler.CouplingMap "(in Qiskit v2.1)") object
  </Attribute>

  ### defs\_filename

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.defs_filename" attributeValue="'defs_peekskill.json'" />

  ### dirname

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.dirname" attributeValue="'/home/runner/work/qiskit-ibm-runtime/qiskit-ibm-runtime/qiskit_ibm_runtime/fake_provider/backends/peekskill'" />

  ### dt

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.dt">
    Return the system time resolution of input signals

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

    **Returns**

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

  ### dtm

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.dtm">
    Return the system time resolution of output signals

    **Returns**

    The output signal timestep in seconds.
  </Attribute>

  ### instruction\_durations

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.instruction_durations">
    Return the [`InstructionDurations`](/docs/api/qiskit/qiskit.transpiler.InstructionDurations "(in Qiskit v2.1)") object.
  </Attribute>

  ### instructions

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.instructions">
    A list of Instruction tuples on the backend of the form `(instruction, (qubits)`
  </Attribute>

  ### max\_circuits

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.max_circuits">
    This property used to return the max\_experiments value from the backend configuration but this value is no longer an accurate representation of backend circuit limits. New fields will be added to indicate new limits.
  </Attribute>

  ### meas\_map

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.meas_map">
    Return the grouping of measurements which are multiplexed

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

    **Returns**

    The grouping of measurements which are multiplexed

    **Raises**

    **NotImplementedError** – if the backend doesn’t support querying the measurement mapping
  </Attribute>

  ### num\_qubits

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.num_qubits">
    Return the number of qubits the backend has.
  </Attribute>

  ### operation\_names

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.operation_names">
    A list of instruction names that the backend supports.
  </Attribute>

  ### operations

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.operations">
    A list of [`Instruction`](/docs/api/qiskit/qiskit.circuit.Instruction "(in Qiskit v2.1)") instances that the backend supports.
  </Attribute>

  ### options

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.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.
  </Attribute>

  ### props\_filename

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.props_filename" attributeValue="'props_peekskill.json'" />

  ### provider

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.provider">
    Return the backend provider.

    **Returns**

    the provider responsible for the backend.

    **Return type**

    provider
  </Attribute>

  ### target

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.target">
    A [`qiskit.transpiler.Target`](/docs/api/qiskit/qiskit.transpiler.Target "(in Qiskit v2.1)") object for the backend.

    **Return type**

    Target
  </Attribute>

  ### version

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.version" attributeValue="2" />

  ### name

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.name">
    Name of the backend.
  </Attribute>

  ### description

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.description">
    Optional human-readable description.
  </Attribute>

  ### online\_date

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.online_date">
    Date that the backend came online.
  </Attribute>

  ### backend\_version

  <Attribute id="qiskit_ibm_runtime.fake_provider.FakePeekskill.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.
  </Attribute>

  ## Methods

  ### check\_faulty

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.check_faulty" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L218-L250" signature="check_faulty(circuit)">
    Check if the input circuit uses faulty qubits or edges.

    **Parameters**

    **circuit** ([*QuantumCircuit*](/docs/api/qiskit/qiskit.circuit.QuantumCircuit "(in Qiskit v2.1)")) – Circuit to check.

    **Raises**

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

    **Return type**

    None
  </Function>

  ### configuration

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.configuration" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L214-L216" signature="configuration()">
    Return the backend configuration.

    **Return type**

    *QasmBackendConfiguration*
  </Function>

  ### defaults

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.defaults" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L191-L212" signature="defaults(refresh=False)">
    (DEPRECATED)Return the pulse defaults for the backend

    **Parameters**

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

    **Returns**

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

    **Return type**

    *PulseDefaults*
  </Function>

  ### properties

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.properties" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L178-L189" signature="properties(refresh=False)">
    Return the backend properties

    **Parameters**

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

    **Returns**

    The backend properties.

    **Return type**

    *BackendProperties*
  </Function>

  ### qubit\_properties

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.qubit_properties" signature="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** (*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

    **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

    **Return type**

    [*QubitProperties*](/docs/api/qiskit/qiskit.providers.QubitProperties "(in Qiskit v2.1)") | *List*\[[*QubitProperties*](/docs/api/qiskit/qiskit.providers.QubitProperties "(in Qiskit v2.1)")]
  </Function>

  ### refresh

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.refresh" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L439-L515" signature="refresh(service)">
    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 or reinstalled.

    **Parameters**

    **service** ([*QiskitRuntimeService*](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
  </Function>

  ### run

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.run" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L323-L354" signature="run(run_input, **options)">
    Run on the fake backend using a simulator.

    This method runs circuit jobs (an individual or a list of QuantumCircuit) using BasicSimulator or Aer simulator and returns a [`Job`](/docs/api/qiskit/qiskit.providers.Job "(in Qiskit v2.1)") 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 list*) – An individual or a list of [`QuantumCircuit`](/docs/api/qiskit/qiskit.circuit.QuantumCircuit "(in Qiskit v2.1)")
    *   **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
  </Function>

  ### set\_options

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.set_options" signature="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
  </Function>

  ### status

  <Function id="qiskit_ibm_runtime.fake_provider.FakePeekskill.status" github="https://github.com/Qiskit/qiskit-ibm-runtime/tree/main/qiskit_ibm_runtime/fake_provider/fake_backend.py#L160-L176" signature="status()">
    Return the backend status.

    **Returns**

    The status of the backend.

    **Return type**

    *BackendStatus*
  </Function>
</Class>