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  • Observation of Genuine One-Way Einstein-Podolsky-Rosen Steering

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    Author(s)
    Wollmann, Sabine
    Walk, Nathan
    Bennet, Adam J
    Wiseman, Howard M
    Pryde, Geoff J
    Griffith University Author(s)
    Wiseman, Howard M.
    Pryde, Geoff
    Year published
    2016
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    Abstract
    Within the hierarchy of inseparable quantum correlations, Einstein-Podolsky-Rosen steering is distinguished from both entanglement and Bell nonlocality by its asymmetry—there exist conditions where the steering phenomenon changes from being observable to not observable, simply by exchanging the role of the two measuring parties. While this one-way steering feature has been previously demonstrated for the restricted class of Gaussian measurements, for the general case of positive-operator-valued measures even its theoretical existence has only recently been settled. Here, we prove, and then experimentally observe, the one-way ...
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    Within the hierarchy of inseparable quantum correlations, Einstein-Podolsky-Rosen steering is distinguished from both entanglement and Bell nonlocality by its asymmetry—there exist conditions where the steering phenomenon changes from being observable to not observable, simply by exchanging the role of the two measuring parties. While this one-way steering feature has been previously demonstrated for the restricted class of Gaussian measurements, for the general case of positive-operator-valued measures even its theoretical existence has only recently been settled. Here, we prove, and then experimentally observe, the one-way steerability of an experimentally practical class of entangled states in this general setting. As well as its foundational significance, the demonstration of fundamentally asymmetric nonlocality also has practical implications for the distribution of the trust in quantum communication networks.
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    Journal Title
    Physical Review Letters
    Volume
    116
    Issue
    16
    DOI
    https://doi.org/10.1103/PhysRevLett.116.160403
    Copyright Statement
    © 2016 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Mathematical sciences
    Physical sciences
    Quantum information, computation and communication
    Engineering
    Publication URI
    http://hdl.handle.net/10072/142541
    Collection
    • Journal articles

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