Fidelity and the communication of quantum information

Stephen M. Barnett, Claire R. Gilson, Masahide Sasaki

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)
11 Downloads (Pure)


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 classical information and the fidelity measures the retrieval of quantum information. We present the optimal measurement strategies for maximizing the fidelity given a source that encodes information on the symmetric qubit-states.
Original languageEnglish
Pages (from-to)6755-6766
Number of pages11
JournalJournal of Physics A: Mathematical and Theoretical
Issue number35
Publication statusPublished - 24 Aug 2001


  • fidelity
  • quantum information
  • optics
  • qubit
  • quantum communication


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