41 lines
2.0 KiB
Plaintext
41 lines
2.0 KiB
Plaintext
---
|
||
title: quantum_volume (dev version)
|
||
description: API reference for qiskit.circuit.library.quantum_volume in the dev version of qiskit
|
||
in_page_toc_min_heading_level: 1
|
||
python_api_type: function
|
||
python_api_name: qiskit.circuit.library.quantum_volume
|
||
---
|
||
|
||
<span id="qiskit-circuit-library-quantum-volume" />
|
||
|
||
# qiskit.circuit.library.quantum\_volume
|
||
|
||
<Function id="qiskit.circuit.library.quantum_volume" isDedicatedPage={true} github="https://github.com/Qiskit/qiskit/tree/main/qiskit/circuit/library/quantum_volume.py#L133-L170" signature="qiskit.circuit.library.quantum_volume(num_qubits, depth=None, seed=None)">
|
||
A quantum volume model circuit.
|
||
|
||
The model circuits are random instances of circuits used to measure the Quantum Volume metric, as introduced in \[1].
|
||
|
||
The model circuits consist of layers of Haar random elements of SU(4) applied between corresponding pairs of qubits in a random bipartition.
|
||
|
||
This function is multithreaded and will launch a thread pool with threads equal to the number of CPUs by default. You can tune the number of threads with the `RAYON_NUM_THREADS` environment variable. For example, setting `RAYON_NUM_THREADS=4` would limit the thread pool to 4 threads.
|
||
|
||
**Reference Circuit:**
|
||
|
||
|
||
|
||
**References:**
|
||
|
||
\[1] A. Cross et al. Validating quantum computers using randomized model circuits, Phys. Rev. A 100, 032328 (2019). [arXiv:1811.12926](https://arxiv.org/abs/1811.12926)
|
||
|
||
**Parameters**
|
||
|
||
* **num\_qubits** ([*int*](https://docs.python.org/3/library/functions.html#int "(in Python v3.13)")) –
|
||
* **depth** ([*int*](https://docs.python.org/3/library/functions.html#int "(in Python v3.13)") *| None*) –
|
||
* **seed** ([*int*](https://docs.python.org/3/library/functions.html#int "(in Python v3.13)") *| np.random.Generator | None*) –
|
||
|
||
**Return type**
|
||
|
||
[QuantumCircuit](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")
|
||
</Function>
|
||
|