A framework for creating, editing, and invoking Noisy Intermediate Scale Quantum (NISQ) circuits.
This is a development version of Cirq and may be unstable.
For the latest stable release of Cirq see
here <https://pypi.org/project/cirq>__.
.. image:: https://raw.githubusercontent.com/quantumlib/Cirq/master/docs/Cirq_logo_color.png :target: https://github.com/quantumlib/cirq :alt: Cirq :width: 500px
Cirq is a Python library for writing, manipulating, and optimizing quantum circuits and running them against quantum computers and simulators.
.. image:: https://travis-ci.com/quantumlib/Cirq.svg?token=7FwHBHqoxBzvgH51kThw&branch=master :target: https://travis-ci.com/quantumlib/Cirq :alt: Build Status
.. image:: https://badge.fury.io/py/cirq.svg :target: https://badge.fury.io/py/cirq
.. image:: https://readthedocs.org/projects/cirq/badge/?version=latest :target: https://readthedocs.org/projects/cirq/versions/ :alt: Documentation Status
Follow these
instructions <https://cirq.readthedocs.io/en/stable/install.html>__.
A simple example to get you up and running:
.. code-block:: python
import cirq
qubit = cirq.GridQubit(0, 0)
circuit = cirq.Circuit( cirq.X(qubit)**0.5, # Square root of NOT. cirq.measure(qubit, key='m') # Measurement. ) print("Circuit:") print(circuit)
simulator = cirq.Simulator() result = simulator.run(circuit, repetitions=20) print("Results:") print(result)
Example output:
.. code-block:: bash
Circuit: (0, 0): ───X^0.5───M('m')─── Results: m=11000111111011001000
See
here <https://cirq.readthedocs.io/en/stable/>__
or jump into the
tutorial <https://cirq.readthedocs.io/en/stable/tutorial.html>__.
We welcome contributions. Please follow these
guidelines <https://github.com/quantumlib/cirq/blob/master/CONTRIBUTING.md>__.
We use
Github issues <https://github.com/quantumlib/Cirq/issues>__
for tracking requests and bugs. Please post questions to the
Quantum Computing Stack Exchange <https://quantumcomputing.stackexchange.com/>__ with the
cirq <https://quantumcomputing.stackexchange.com/questions/tagged/cirq>__ tag.
For informal discussions about Cirq, join our cirqdev <https://gitter.im/cirqdev>__ Gitter channel.
For those interested in using quantum computers to solve problems in
chemistry and materials science, we encourage exploring
OpenFermion <https://github.com/quantumlib/openfermion>__ and
its sister library for compiling quantum simulation algorithms in Cirq,
OpenFermion-Cirq <https://github.com/quantumlib/openfermion-cirq>__.
Cirq is currently in alpha. We are still making breaking changes. We will break your code when we make new releases. We recommend that you target a specific version of Cirq, and periodically bump to the latest release. That way you have control over when a breaking change affects you.
Cirq is not an official Google product. Copyright 2018 The Cirq Developers
FAQs
A framework for creating, editing, and invoking Noisy Intermediate Scale Quantum (NISQ) circuits.
We found that cirq-dev demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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