Quantum Computing Service

The platform enabling researchers to access beyond-classical computational resources

Our quantum computing service provides chaperoned access to NISQ processors and our simulator for researchers who aim to advance the state-of-the-art in quantum computing and publicly share their results in algorithms, applications, tools, and processor characterizations.

import cirq
import sympy

sampler = cirq.google.get_engine_sampler(

circuit = cirq.Circuit(
  cirq.measure(cirq.GridQubit(5,4), key='meas'))
rabi_sweep = cirq.Linspace('t', start=0, stop=1, length=20)

results = sampler.run_sweep(circuit,
for t in range(20):

Early Access

We offer a quantum computing service to scientists developing algorithms for noisy-intermediate-scale quantum processors like Sycamore. The goal is to advance NISQ state-of-the-art in new algorithms, tools, and characterizations that lead to useful applications. Approved projects will run programs on Sycamore via our Quantum Engine API, and user feedback will improve the service.

We are currently collaborating with a group of early access partners and will welcome new applications in 2021.


Technical questions: Stack Exchange

GitHub repositories: Quantumlib

Educational resources


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.

Request for comment

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