<div align="center">
<img width="220px" alt="Cirq logo"
src="https://raw.githubusercontent.com/quantumlib/Cirq/refs/heads/main/docs/images/Cirq_logo_color.svg">
</div>
# cirq-google
This is the Cirq-Google integration module. It provides an interface to
Google's [Quantum Computing
Service](https://quantumai.google/cirq/google/concepts), and also contains
additional tools for calibration and characterization of Google's quantum
hardware devices.
| Please note! |
|:--------------------:|
| Google's quantum hardware is currently available only to authorized partners. Access requires an application, usually with a Google sponsor.|
[Cirq] is a Python package for writing, manipulating, and running [quantum
circuits](https://en.wikipedia.org/wiki/Quantum_circuit) on quantum computers
and simulators. Cirq provides useful abstractions for dealing with today’s
[noisy intermediate-scale quantum](https://arxiv.org/abs/1801.00862) (NISQ)
computers, where the details of quantum hardware are vital to achieving
state-of-the-art results. For more information about Cirq, please visit the
[Cirq documentation site].
[Cirq]: https://github.com/quantumlib/cirq
[Cirq documentation site]: https://quantumai.google/cirq
## Installation
This module is built on top of [Cirq]; installing this module will
automatically install `cirq-core` and other dependencies. There are two
installation options for the `cirq-google` module:
* To install the stable version of `cirq-google`, use
```shell
pip install cirq-google
```
* To install the latest pre-release version of `cirq-google`, use
```shell
pip install --upgrade cirq-google~=1.0.dev
```
(The `~=` has a special meaning to `pip` of selecting the latest version
compatible with the `1.*` and `dev` in the name. Despite appearances,
this will not install an old version 1.0 release!)
If you would like to install Cirq with all the optional modules, not just
`cirq-google`, then instead of the above commands, use `pip install cirq` for
the stable release or `pip install --upgrade cirq~=1.0.dev` for the latest pre-release
version.
## Documentation
To get started with using Google quantum computers through Cirq, please refer to
the following documentation:
* [Access and authentication](https://quantumai.google/cirq/google/access).
* [Getting started
guide](https://quantumai.google/cirq/tutorials/google/start).
To get started with using Cirq in general, please refer to the [Cirq
documentation site].
For more information about getting help, reporting bugs, and other matters
related to Cirq and the Cirq-Core integration module, please visit the [Cirq
repository on GitHub](https://github.com/quantumlib/Cirq).
## Disclaimer
Cirq is not an official Google product. Copyright 2019 The Cirq Developers.
Raw data
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