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  • Entanglement under restricted operations: analogy to mixed state entanglement

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    Author(s)
    Bartlett, SD
    Doherty, AC
    Spekkens, RW
    Wiseman, HM
    Griffith University Author(s)
    Wiseman, Howard M.
    Year published
    2006
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    Abstract
    We show that the classification of bi-partite pure entangled states when local quantum operations are restricted yields a structure that is analogous in many respects to that of mixed-state entanglement. Specifically, we develop this analogy by restricting operations through local superselection rules, and show that such exotic phenomena as bound entanglement and activation arise using pure states in this setting. This analogy aids in resolving several conceptual puzzles in the study of entanglement under restricted operations. In particular, we demonstrate that several types of quantum optical states that possess confusing ...
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    We show that the classification of bi-partite pure entangled states when local quantum operations are restricted yields a structure that is analogous in many respects to that of mixed-state entanglement. Specifically, we develop this analogy by restricting operations through local superselection rules, and show that such exotic phenomena as bound entanglement and activation arise using pure states in this setting. This analogy aids in resolving several conceptual puzzles in the study of entanglement under restricted operations. In particular, we demonstrate that several types of quantum optical states that possess confusing entanglement properties are analogous to bound entangled states. Also, the classification of pure-state entanglement under restricted operations can be much simpler than for mixed-state entanglement. For instance, in the case of local Abelian superselection rules all questions concerning distillability can be resolved.
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    Journal Title
    Physical Review A (Atomic, Molecular and Optical Physics)
    Volume
    73
    Publisher URI
    http://pra.aps.org/
    DOI
    https://doi.org/10.1103/PhysRevA.73.022311
    Copyright Statement
    © 2006 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
    Chemical sciences
    Publication URI
    http://hdl.handle.net/10072/14372
    Collection
    • Journal articles

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