scqubits

scqubits: superconducting qubits in Python

J. Koch, P. Groszkowski

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scqubits is an open-source Python library for simulating superconducting qubits. It is meant to give the user a convenient way to obtain energy spectra of common superconducting qubits, plot energy levels as a function of external parameters, calculate matrix elements etc. The library further provides an interface to QuTiP, making it easy to work with composite Hilbert spaces consisting of coupled superconducting qubits and harmonic modes. Internally, numerics within scqubits is carried out with the help of Numpy and Scipy; plotting capabilities rely on Matplotlib.

If scqubits is helpful to you in your research, please support its continued development and maintenance. Use of scqubits in research publications is appropriately acknowledged by citing:

    Peter Groszkowski and Jens Koch,
    scqubits: a Python package for superconducting qubits,
    Quantum 5, 583 (2021).
    https://quantum-journal.org/papers/q-2021-11-17-583/

    Sai Pavan Chitta, Tianpu Zhao, Ziwen Huang, Ian Mondragon-Shem, and Jens Koch,
    Computer-aided quantization and numerical analysis of superconducting circuits,
    New J. Phys. 24 103020 (2022).
    https://iopscience.iop.org/article/10.1088/1367-2630/ac94f2

Download and Installation

For Python 3.9 - 3.12: installation via conda is supported.

conda install -c conda-forge scqubits

Alternatively, scqubits can be installed via pip (although it should be noted that installing via pip under a conda environment is strongly discouraged, and is not guaranteed to work - see conda documentation).

pip install scqubits

Documentation

The documentation for scqubits is available at: https://scqubits.readthedocs.io

Related Packages

There are two related packages on github:

documentation source code: https://github.com/scqubits/scqubits-doc
example notebooks: https://github.com/scqubits/scqubits-examples

Contribute

You are welcome to contribute to scqubits development by forking this repository and sending pull requests, or filing bug reports at the issues page.

All contributions are acknowledged in the contributors section in the documentation.

All contributions are expected to be consistent with PEP 8 -- Style Guide for Python Code.

License

You are free to use this software, with or without modification, provided that the conditions listed in the LICENSE file are satisfied.