Discord as a quantum resource for bi-partite communication

Helen M. Chrzanowski, Mile Gu, Syed M. Assad, Thomas Symul, Kavan Modi, Timothy C. Ralph, Vlatko Vedral, Ping Koy Lam

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Coherent interactions that generate negligible entanglement can still exhibit unique quantum behaviour. This observation has motivated a search beyond entanglement for a complete description of all quantum correlations. Quantum discord is a promising candidate. Here, we experimentally demonstrate that under certain measurement constraints, discord between bipartite systems can be consumed to encode information that can only be accessed by coherent quantum interactions. The inability to access this information by any other means allows us to use discord to directly quantify this 'quantum advantage'.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    EditorsPhilip Walther, Hannes-Jorg Schmiedmayer
    PublisherAmerican Institute of Physics Inc.
    Pages116-118
    Number of pages3
    ISBN (Electronic)9780735412729
    DOIs
    Publication statusPublished - 2014
    Event11th International Conference on Quantum Communication, Measurement and Computation, QCMC 2012 - Vienna, Austria
    Duration: 30 Jul 20123 Aug 2012

    Publication series

    NameAIP Conference Proceedings
    Volume1633
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Conference

    Conference11th International Conference on Quantum Communication, Measurement and Computation, QCMC 2012
    Country/TerritoryAustria
    CityVienna
    Period30/07/123/08/12

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