# Qiskit Dynamics
[](https://opensource.org/licenses/Apache-2.0)
[](https://doi.org/10.21105/joss.05853)
**This repo is still in the early stages of development, there will be breaking API changes**
Qiskit Dynamics is an open-source project for building, transforming, and solving time-dependent
quantum systems in Qiskit.
The goal of Qiskit Dynamics is to provide access to different numerical methods for solving
differential equations, and to automate common processes typically performed by hand, e.g. applying
frame transformations or rotating wave approximations to system and control Hamiltonians.
Qiskit Dynamics can be configured to use either [NumPy](https://github.com/numpy/numpy) or
[JAX](https://github.com/google/jax) as the backend for array operations.
[NumPy](https://github.com/numpy/numpy) is the default, and [JAX](https://github.com/google/jax) is
an optional dependency. [JAX](https://github.com/google/jax) provides just-in-time compilation,
automatic differentiation, and GPU execution, and therefore is well-suited to tasks involving
repeated evaluation of functions with different parameters; E.g. simulating a model of a quantum
system over a range of parameter values, or optimizing the parameters of control sequence.
Reference documentation may be found [here](https://qiskit-extensions.github.io/qiskit-dynamics/), including
[tutorials](https://qiskit-extensions.github.io/qiskit-dynamics/tutorials/index.html),
[user guide](https://qiskit-extensions.github.io/qiskit-dynamics/userguide/index.html),
[API reference](https://qiskit-extensions.github.io/qiskit-dynamics/apidocs/index.html), and
[Discussions](https://qiskit-extensions.github.io/qiskit-dynamics/discussions/index.html).
## Installation
Qiskit Dynamics may be installed using pip via:
```
pip install qiskit-dynamics
```
Additionally, Qiskit Dynamics may be installed simultaneously with the CPU version of
JAX via:
```
pip install "qiskit-dynamics[jax]"
```
Installing JAX with GPU support must be done manually, for instructions refer to the
[JAX installation guide](https://github.com/google/jax#installation).
## Contribution Guidelines
If you'd like to contribute to Qiskit Dynamics, please take a look at our
[contribution guidelines](CONTRIBUTING.md). This project adheres to Qiskit's
[code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code.
We use [GitHub issues](https://github.com/Qiskit-Extensions/qiskit-dynamics/issues) for tracking
requests and bugs. Please [join the Qiskit Slack community](https://qisk.it/join-slack) and use our
[#qiskit-dynamics](https://qiskit.slack.com/archives/C03E7UVCDEV) channel for discussion and simple
questions. For questions that are more suited for a forum we use the Qiskit tag in the
[Stack Exchange](https://quantumcomputing.stackexchange.com/questions/tagged/qiskit).
## Authors and Citation
Qiskit Dynamics is the work of
[many people](https://github.com/Qiskit-Extensions/qiskit-dynamics/graphs/contributors) who
contribute to the project at different levels. If you use Qiskit Dynamics, please cite our
[paper](https://joss.theoj.org/papers/10.21105/joss.05853) as per the included
[BibTeX file](https://github.com/Qiskit-Extensions/qiskit-dynamics/blob/main/CITATION.bib).
## License
[Apache License 2.0](LICENSE.txt)
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"description": "# Qiskit Dynamics\n\n[](https://opensource.org/licenses/Apache-2.0)\n[](https://doi.org/10.21105/joss.05853)\n\n**This repo is still in the early stages of development, there will be breaking API changes**\n\nQiskit Dynamics is an open-source project for building, transforming, and solving time-dependent\nquantum systems in Qiskit.\n\nThe goal of Qiskit Dynamics is to provide access to different numerical methods for solving\ndifferential equations, and to automate common processes typically performed by hand, e.g. applying\nframe transformations or rotating wave approximations to system and control Hamiltonians.\n\nQiskit Dynamics can be configured to use either [NumPy](https://github.com/numpy/numpy) or\n[JAX](https://github.com/google/jax) as the backend for array operations.\n[NumPy](https://github.com/numpy/numpy) is the default, and [JAX](https://github.com/google/jax) is\nan optional dependency. [JAX](https://github.com/google/jax) provides just-in-time compilation,\nautomatic differentiation, and GPU execution, and therefore is well-suited to tasks involving\nrepeated evaluation of functions with different parameters; E.g. simulating a model of a quantum\nsystem over a range of parameter values, or optimizing the parameters of control sequence.\n\nReference documentation may be found [here](https://qiskit-extensions.github.io/qiskit-dynamics/), including\n[tutorials](https://qiskit-extensions.github.io/qiskit-dynamics/tutorials/index.html),\n[user guide](https://qiskit-extensions.github.io/qiskit-dynamics/userguide/index.html),\n[API reference](https://qiskit-extensions.github.io/qiskit-dynamics/apidocs/index.html), and\n[Discussions](https://qiskit-extensions.github.io/qiskit-dynamics/discussions/index.html).\n\n## Installation\n\nQiskit Dynamics may be installed using pip via:\n\n```\npip install qiskit-dynamics\n```\n\nAdditionally, Qiskit Dynamics may be installed simultaneously with the CPU version of\nJAX via:\n\n```\npip install \"qiskit-dynamics[jax]\"\n```\n\nInstalling JAX with GPU support must be done manually, for instructions refer to the\n[JAX installation guide](https://github.com/google/jax#installation).\n\n\n## Contribution Guidelines\n\nIf you'd like to contribute to Qiskit Dynamics, please take a look at our \n[contribution guidelines](CONTRIBUTING.md). This project adheres to Qiskit's \n[code of conduct](CODE_OF_CONDUCT.md). By participating, you are expected to uphold this code.\n\nWe use [GitHub issues](https://github.com/Qiskit-Extensions/qiskit-dynamics/issues) for tracking\nrequests and bugs. Please [join the Qiskit Slack community](https://qisk.it/join-slack) and use our\n[#qiskit-dynamics](https://qiskit.slack.com/archives/C03E7UVCDEV) channel for discussion and simple\nquestions. For questions that are more suited for a forum we use the Qiskit tag in the \n[Stack Exchange](https://quantumcomputing.stackexchange.com/questions/tagged/qiskit).\n\n## Authors and Citation\n\nQiskit Dynamics is the work of \n[many people](https://github.com/Qiskit-Extensions/qiskit-dynamics/graphs/contributors) who\ncontribute to the project at different levels. If you use Qiskit Dynamics, please cite our\n[paper](https://joss.theoj.org/papers/10.21105/joss.05853) as per the included\n[BibTeX file](https://github.com/Qiskit-Extensions/qiskit-dynamics/blob/main/CITATION.bib).\n\n## License\n\n[Apache License 2.0](LICENSE.txt)\n",
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