---
title: QuGrad
tags: VQE, Hamiltonian-level
description: A Python package for quantum optimal control.
---

[[/index|Christopher K. Long]]<a href="https://orcid.org/0009-0001-3230-942X"><font color="#a6ce39"><i class='fa-brands fa-orcid'></i></font></a>,
Crispin H. W. Barnes<a href="https://orcid.org/0000-0001-7337-7245"><font color="#a6ce39"><i class='fa-brands fa-orcid'></i></font></a>,
and Normann Mertig<a href="https://orcid.org/0000-0003-3025-7141"><font color="#a6ce39"><i class='fa-brands fa-orcid'></i></font></a>

# Online repositories

- GitHub: https://github.com/Christopher-K-Long/QuGrad
- GitLab (mirror): https://gitlab.com/Christopher-K-Long/QuGrad
- Zenodo (DOI): https://doi.org/10.5281/zenodo.17116721

# README file

![[Repository/README]]

# Repository files
- [[Repository/README]]
- [[Repository/ChangeLog]]
- [[Repository/SECURITY]]
- [[/Software/QuGrad/Repository/LICENSE]]

# Citation

Christopher K. Long, Crispin H. W. Barnes, and Normann Mertig. QuGrad, (Zenodo, 2025–2026), DOI: [10.5281/zenodo.17116721](https://doi.org/10.5281/zenodo.17116721).

## BibTeX

```bibtex
@software{long_2025_17393503,
    author       = {Long, Christopher K. and
                    Barnes, Crispin H. W. and
                    Mertig, Normann},
    title        = {QuGrad},
    license = {Apache-2.0},
    publisher    = {Zenodo},
    doi          = {10.5281/zenodo.17116721},
    url          = {https://doi.org/10.5281/zenodo.17116721},
    swhid        = {swh:1:dir:3f1463931c91d9d4c11a0e7c366fb8402802000f
                    ;origin=https://doi.org/10.5281/zenodo.17116721;vi
                    sit=swh:1:snp:df0b3bb73aaccaae9eb7312a2b4733da1ed5
                    e8f3;anchor=swh:1:rel:4c8267d6501632964bc880ff1651
                    67665ab8a81d;path=Christopher-K-Long-
                    QuGrad-8fcb2bf
                    },
}
```

# Dependencies I authored
- [[/Software/PySTE/index|PySTE]] [@PySTE]