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Photonics

Perceval

Maintained by Quandela

An open source framework for programming photonic quantum computers

PythonMIT
Perceval illustration

Resource snapshot

Category

Photonics

Stars

202

Last pushed

May 25, 2026Updated 3mo ago

Open issues

3

What it is

Perceval is maintained by Quandela and sits in the Photonics lane of the open-source quantum map.

An open source framework for programming photonic quantum computers

Last verified by Qtangl generator on May 27, 2026

Who it's for

People exploring optical and photonic models of quantum computing, especially outside the usual gate-model framing.

What you can build or learn

  • Understand how photonic circuits, modes, and optical programs are represented.
  • Compare photonic workflows with more familiar circuit-model SDKs.
  • Learn which parts of the photonics ecosystem are most approachable.

License

MIT

SPDX identifier detected from the repository metadata or license files.

Repository README

Preview from the project README.

Rendered as Markdown inside a scrollable preview. Long READMEs stay contained; expand or open on GitHub for the full document.

~372 words · about 2 min readOpen on GitHub

CI

CI CI

Perceval

Through a simple object-oriented python API, Perceval provides tools for building a circuit with linear optics components, defining single-photon sources and their error model, manipulating Fock states, running simulations, reproducing published experimental papers results, and experimenting with a new generation of quantum algorithms.

It is interfaced with the available QPUs on the Quandela cloud, so it is possible to run computations on an actual photonic computer.

Perceval aims to be a companion tool for developing discrete-variable photonics circuits

  • while simulating their design, modelling their ideal and real-life behaviour;
  • and proposing a normalized interface to control photonic quantum computers;
  • while using powerful simulation backends to get state-of-the-art simulation;
  • and also allowing direct access to the QPUs of Quandela.

Perceval has been developed as a complete toolkit for physicists and quantum computational students, researchers and practitioners.

Key Features

  • Powerful Circuit designer making use of predefined components
  • Simple python API and powerful simulation backends optimized in C
  • Misc technical utilities to manipulate State Vector, Unitary Matrices, and circuit Parameters
  • Transversal tools for visualization compatible with notebooks or local development environments
  • Numerical and symbolical computation
  • Modular architecture welcoming contributions from the community

Installation

Perceval requires:

  • Python between 3.10 and 3.14

PIP

We recommend installing it with pip:

pip install --upgrade pip
pip install perceval-quandela

Our qiskit, qutip, cqasm or myqlm bridges have been moved to a separate interoperability package perceval-interop (https://perceval.quandela.net/interopdocs/).

GitHub

git clone https://github.com/quandela/Perceval

then to install Perceval:

pip install .

Or for developers:

pip install -e .

Running tests and benchmarks

Unit tests files are part of the repository in tests/ and can be run with:

pip install -r tests/requirements.txt
pytest

Additionally, you can see a coverage report with the command:

pytest --cov=perceval

Benchmark tests for computing-intensive functions are in benchmark/ and can be run with:

pytest benchmark/benchmark_*.py

Comparison benchmarks for different platforms are also committed in .benchmarks/ - see pytest-benchmark documentation for more information.

Documentation and Forum

Read on GitHub

Activity

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Watchers

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