65 lines
2.5 KiB
Plaintext
65 lines
2.5 KiB
Plaintext
---
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title: fake_provider (dev version)
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description: API reference for qiskit.providers.fake_provider in the dev version of qiskit
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in_page_toc_min_heading_level: 2
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python_api_type: module
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python_api_name: qiskit.providers.fake_provider
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---
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<span id="module-qiskit.providers.fake_provider" />
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<span id="qiskit-providers-fakeprovider" />
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<span id="fake-provider-qiskit-providers-fake-provider" />
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# Fake Provider
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`qiskit.providers.fake_provider`
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## Overview
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The fake provider module in Qiskit contains fake (simulated) backend classes useful for testing the transpiler and other backend-facing functionality.
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### Example Usage
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Here is an example of using a simulated backend for transpilation and running.
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```python
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from qiskit import QuantumCircuit, transpile
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from qiskit.providers.fake_provider import GenericBackendV2
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from qiskit.visualization import plot_histogram
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# Generate a 5-qubit simulated backend
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backend = GenericBackendV2(num_qubits=5)
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# Create a simple circuit
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circuit = QuantumCircuit(3)
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circuit.h(0)
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circuit.cx(0,1)
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circuit.cx(0,2)
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circuit.measure_all()
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circuit.draw('mpl')
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# Transpile the ideal circuit to a circuit that can be directly executed by the backend
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transpiled_circuit = transpile(circuit, backend)
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transpiled_circuit.draw('mpl')
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# Run the transpiled circuit using the simulated backend
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job = backend.run(transpiled_circuit)
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counts = job.result().get_counts()
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plot_histogram(counts)
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```
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## V2 Simulated Backends
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| ---------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ |
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| [`GenericBackendV2`](qiskit.providers.fake_provider.GenericBackendV2 "qiskit.providers.fake_provider.GenericBackendV2")(num\_qubits\[, basis\_gates, ...]) | Generic [`BackendV2`](qiskit.providers.BackendV2 "qiskit.providers.BackendV2") implementation with a configurable constructor. |
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