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@quantumlib

quantumlib

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

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  1. Cirq Cirq Public

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

    Python 4.8k 1.2k

  2. Qualtran Qualtran Public

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

    Python 277 83

  3. qsim qsim Public

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

    C++ 617 188

  4. OpenFermion OpenFermion Public

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

    Python 1.6k 404

  5. Stim Stim Public

    A fast stabilizer circuit library.

    C++ 592 174

  6. ReCirq ReCirq Public

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

    Python 297 129

Repositories

Showing 10 of 18 repositories
  • Cirq Public

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

    quantumlib/Cirq’s past year of commit activity
    Python 4,778 Apache-2.0 1,153 111 (19 issues need help) 27 Updated Dec 3, 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 277 Apache-2.0 83 230 39 Updated Dec 2, 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
  • OpenFermion Public

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

    quantumlib/OpenFermion’s past year of commit activity
    Python 1,645 Apache-2.0 404 44 (24 issues need help) 19 Updated Dec 1, 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 5 Updated Dec 1, 2025
  • qsim Public

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

    quantumlib/qsim’s past year of commit activity
    C++ 617 Apache-2.0 188 48 (4 issues need help) 9 Updated Dec 1, 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
  • ReCirq Public

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

    quantumlib/ReCirq’s past year of commit activity
    Python 297 Apache-2.0 129 13 (13 issues need help) 4 Updated Nov 19, 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 Nov 18, 2025
  • Stim Public

    A fast stabilizer circuit library.

    quantumlib/Stim’s past year of commit activity
    C++ 592 Apache-2.0 174 60 18 Updated Oct 28, 2025
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