Explore our
quantum software

Our software stack includes open source tools and a quantum computing service to develop novel quantum algorithms.

Start programming in Cirq

Computing Service

Our computing service lets you access and run jobs on our quantum processors.

Quantum Computing Service

Our Quantum Computing Service provides remote access to Google's world-leading quantum processors and simulators. Researchers with approved projects can schedule jobs on our quantum processors, and run simulations using Google infrastructure.
Learn more

Quantum computing hardware

See details of our leading quantum hardware and the types of experiments we are working on.
Learn more

Hardware specifications

Learn about the performance and functionality of our latest quantum processors.
Preview specs

Programming framework

Cirq, our open source framework, is specifically designed for developing novel quantum algorithms to help solve near-term applications for practical problems.

Framework

Cirq

An open-source quantum framework for building and experimenting with noisy intermediate scale quantum (NISQ) algorithms on near-term quantum processors
Learn more

Cirq Tutorials

Explore sample problems and experiments to learn the fundamentals of how to use Cirq.
Learn more

Cirq Guide

Learn the underlying concepts and how to install Cirq so that you can begin writing, manipulating, and optimizing quantum circuits.
Learn more

Featured libraries and extensions

View all
Library

OpenFermion

An open-source platform for translating problems in chemistry and materials science into quantum circuits that can be executed on existing platforms.
Learn more
Library

TensorFlow Quantum

TensorFlow Quantum (TFQ) is a quantum machine learning library for rapid prototyping of hybrid quantum-classical ML models from within TensorFlow.
Learn more
Library

qsim

A powerful quantum circuit simulator that integrates with Cirq.
Learn more
3rd-party extension

Pennylane

The PennyLane-Cirq plugin integrates the Cirq quantum computing framework with PennyLane's quantum machine learning capabilities.
Learn more
3rd-party extension

Alpine Quantum Technologies

AQT provides trapped ion quantum devices, and can be programmed directly from Cirq
Learn more
3rd-party extension

Pasqal

Pasqal provides a neutral atom quantum computing device, and can be programmed directly from Cirq.
Learn more

Resources

Technical questions: Stack Exchange

Explore

GitHub repositories: Quantumlib

Explore

Educational resources

Learn more

Community

We are dedicated to cultivating an open and inclusive community to build software for near term quantum computers, and we welcome contributions from the community.

Join our weekly open source meetings

We host virtual open source meetings every week. Join our email lists to get invited to the ongoing open source meetings relevant to your work.

Cirq Weekly Sync

Subscribe: cirq-dev

OpenFermion Weekly Sync

Subscribe: openfermion-dev

TensorFlow Quantum Weekly Sync

Subscribe: tfq-dev

Quantum Circuit Simulation Weekly Sync

Subscribe: qsim-qsimh-dev

Contribute to open source code

Whether you are a researcher who wants to push the boundaries of what's available for NISQ computers, a software engineer, a technical writer, or a student who is excited about quantum computing, we welcome your contributions to our open source code available on GitHub.

Getting started

If you are looking for something to help out in Cirq, see the list of good first issues to get started.

Learn more

Request for comment

For larger features, check out our RFC process to learn how to contribute.

Learn more

Discover our research

We’re working to solve near-term problems both theoretical and practical through advances in quantum computing research.

Learn more