English

Fidelity and the communication of quantum information

Quantum Physics 2009-11-07 v1

Abstract

We compare and contrast the error probability and fidelity as measures of the quality of the receiver's measurement strategy for a quantum communications system. The error probability is a measure of the ability to retrieve {\it classical} information and the fidelity measures the retrieval of {\it quantum} information. We present the optimal measurement strategies for maximising the fidelity given a source that encodes information on the symmetric qubit-states.

Keywords

Cite

@article{arxiv.quant-ph/0107024,
  title  = {Fidelity and the communication of quantum information},
  author = {Stephen M. Barnett and Claire R. Gilson and Masahide Sasaki},
  journal= {arXiv preprint arXiv:quant-ph/0107024},
  year   = {2009}
}

Comments

11 pages, RevTeX, 3 figures(EPSF)

R2 v1 2026-07-22T19:31:39.499Z