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No-signaling bound on quantum state discrimination

Croke, Sarah and Andersson, Erika and Barnett, Stephen M. (2008) No-signaling bound on quantum state discrimination. Physical Review A, 77 (1). 012113-012118. ISSN 1050-2947

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    Abstract

    Quantum correlations do not allow signaling, and any operation which may be performed on one system of an entangled pair cannot be detected by measurement of the other system alone. This no-signaling condition limits allowed operations and, in the context of quantum communication, may be used to put bounds on quantum state discrimination. We find that the natural figure of merit to consider is the confidence in identifying a state, which is optimized by the maximum confidence strategy. We show that this strategy may be derived from the no-signaling condition, and demonstrate the relationship between maximum confidence measurements and entanglement concentration.

    Item type: Article
    ID code: 6446
    Keywords: quantum correlation, signaling, no-signaling, quantum communication, quantum state, physics, Optics. Light, Physics, Atomic and Molecular Physics, and Optics
    Subjects: Science > Physics > Optics. Light
    Science > Physics
    Department: Faculty of Science > Physics
    Related URLs:
    Depositing user: Miss Darcy Spiller
    Date Deposited: 07 Jul 2008
    Last modified: 04 Sep 2014 23:35
    URI: http://strathprints.strath.ac.uk/id/eprint/6446

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