quantumlib

Google's open-source software for the quantum world.

Pinned Loading

Cirq Cirq Public

Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

Python 4.8k 1.2k
Qualtran Qualtran Public

Qᴜᴀʟᴛʀᴀɴ is a Python library for expressing and analyzing Fault Tolerant Quantum algorithms.

Python 284 87
qsim qsim Public

Fast C++ and Python library for state-vector simulation of quantum circuits.

C++ 628 192
OpenFermion OpenFermion Public

Python package for compiling and analyzing quantum algorithms to simulate electronic structures.

Python 1.7k 405
Stim Stim Public

A fast stabilizer circuit library.

C++ 608 178
ReCirq ReCirq Public

Python modules for quantum computing applications and experiments using Cirq. Research using Cirq!

Python 298 130

Repositories

Cirq Public
Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

quantumlib/Cirq’s past year of commit activity

Python 4,808 Apache-2.0 1,163 109 (18 issues need help) 27 Updated Dec 23, 2025
OpenFermion Public
Python package for compiling and analyzing quantum algorithms to simulate electronic structures.

quantumlib/OpenFermion’s past year of commit activity

Python 1,653 Apache-2.0 405 44 (24 issues need help) 24 Updated Dec 22, 2025
ReCirq Public
Python modules for quantum computing applications and experiments using Cirq. Research using Cirq!

quantumlib/ReCirq’s past year of commit activity

Python 298 Apache-2.0 130 14 (13 issues need help) 6 Updated Dec 20, 2025
TypedUnits Public
A fast units and dimensions library with support for static dimensionality checking and protobuffer serialization.

quantumlib/TypedUnits’s past year of commit activity

Python 8 Apache-2.0 6 1 (1 issue needs help) 1 Updated Dec 19, 2025
qsim Public
Fast C++ and Python library for state-vector simulation of quantum circuits.

quantumlib/qsim’s past year of commit activity

C++ 628 Apache-2.0 192 48 (4 issues need help) 10 Updated Dec 19, 2025
Qualtran Public
Qᴜᴀʟᴛʀᴀɴ is a Python library for expressing and analyzing Fault Tolerant Quantum algorithms.

quantumlib/Qualtran’s past year of commit activity

Python 284 Apache-2.0 87 232 39 Updated Dec 16, 2025
chromobius Public
Open-source implementation of a "Möbius decoder" for color codes used in quantum error correction (QEC)

quantumlib/chromobius’s past year of commit activity

Python 24 Apache-2.0 6 1 4 Updated Dec 13, 2025
tesseract-decoder Public
Search-based decoder for quantum error correction (QEC) written in C++ and Python.

quantumlib/tesseract-decoder’s past year of commit activity

C++ 88 Apache-2.0 17 13 19 Updated Dec 2, 2025
unitary Public
Open-source API library providing common operations for adding quantum behaviors to games.

quantumlib/unitary’s past year of commit activity

OpenQASM 40 Apache-2.0 28 18 8 Updated Dec 1, 2025
Stim Public
A fast stabilizer circuit library.

quantumlib/Stim’s past year of commit activity

C++ 608 Apache-2.0 178 60 20 Updated Oct 28, 2025