Abstract
We consider the problem of efficiently computing the Uhlmann fidelity in the case when explicit density matrix descriptions are available. We derive an alternative formula which is simpler to evaluate numerically, saving a factor of 10 in time for large matrices.
- Received 14 November 2022
- Accepted 11 January 2023
DOI:https://doi.org/10.1103/PhysRevA.107.012427
©2023 American Physical Society
Physics Subject Headings (PhySH)
Quantum Information, Science & Technology
