An alternative quantum fidelity for mixed states of qudits
Quantum Physics
2009-11-13 v1
Abstract
We give an alternative definition of quantum fidelity for two density operators on qudits in terms of the Hilbert-Schmidt inner product between them and their purity. It can be regarded as the well-defined operator fidelity for the two operators and satisfies all Jozsa's four axioms up to a normalization factor. One desire property is that it is not computationally demanding.
Keywords
Cite
@article{arxiv.0807.1781,
title = {An alternative quantum fidelity for mixed states of qudits},
author = {Xiaoguang Wang and Chang-Shui Yu and X. X. Yi},
journal= {arXiv preprint arXiv:0807.1781},
year = {2009}
}
Comments
3 pages, no figs