The repository contains all the necessary code files for performing simulations and experiments for the Wigner tomography of unknown quantum processes.
This is a method to perform scanning-based tomography for unknown quantum processes in the framework of DROPS representation. This representation provides a rich visualization of quantum operators, such as density matrices and processes, by depicting them as shapes assembled as a linear combination of spherical harmonics. The DROPS representation can be accessed here: https://spindrops.org/.
The code is structured as follows:
- The folder 'Qiskit_codes' contains codes for performing calibration experiments and experiments/simulations. The experiment/simulation outputs the expectation values as a '.mat' file, which is required for the reconstruction algorithm.
- Folder 'Reconstruction_algorithm' contains the algorithm based on with and without optimization. Here, the expectation values (obtained from experiments/simulations) can be used to get the full information about the unknown process.
If you use these codes and part of the codes, please cite it as follows:
@misc{devra2024theoryexperimentaldemonstrationwigner,
title={Theory and Experimental Demonstration of Wigner Tomography of Unknown Unitary Quantum Gates},
author={Amit Devra and Lèo Van Damme and Frederik vom Ende and Emanuel Malvetti and Steffen J. Glaser},
year={2024},
eprint={2411.05404},
archivePrefix={arXiv},
primaryClass={quant-ph},
url={https://arxiv.org/abs/2411.05404},
}