QuTiP
Quantum Toolbox in Python
The open-source software for simulating quantum systems from quantum optics and quantum computing to open-system dynamics.
The QuTiP Family
QuTiP is more than just a Python package. Check out all the related projects!
World Wide Community
From Education to Industry
QuTiP is used to advance research in quantum optics, quantum information, quantum open systems, optomechanics, and many related fields. QuTiP is in use at nearly all research universities around the globe, government-funded research labs, and is relied upon by most major corporation developing a quantum computer.
Open-Source Community
QuTiP is used around the globe, and has been downloaded over a million times since its initial release. Need help in simulating a tricky problem? Our large community of users are happy to help in tackling even the most esoteric of issues.
Distribution of 50,000+ unique visitors in 2025
Supporting Organisations
Developers from Nori's Lab, Blais' Lab and Yueh-Nan Chen's group have been actively contributing to QuTiP.
QuTiP is proud to be working with these organizations:
QuTiP is happy to acknowledge Zulip for providing a free chat service for open-source projects:
We also thank Google for their support through the Google Summer of Code program.
Look at our past projects.
