English

Quantum fidelity and relative entropy between unitary orbits

Quantum Physics 2014-01-15 v2 Mathematical Physics math.MP

Abstract

Fidelity and relative entropy are two significant quantities in quantum information theory. We study the quantum fidelity and relative entropy under unitary orbits. The maximal and minimal quantum fidelity and relative entropy between two unitary orbits are explicitly derived. The potential applications in quantum computation and information processing are discussed.

Keywords

Cite

@article{arxiv.1305.1472,
  title  = {Quantum fidelity and relative entropy between unitary orbits},
  author = {Lin Zhang and Shao-Ming Fei},
  journal= {arXiv preprint arXiv:1305.1472},
  year   = {2014}
}

Comments

11 pages, LaTeX, publised version in JPA

R2 v1 2026-06-22T00:12:44.149Z