Wyniki wyszukiwania dla: SEPARABLE CORRELATIONS - MOST Wiedzy

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Wyniki wyszukiwania dla: SEPARABLE CORRELATIONS

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Wyniki wyszukiwania dla: SEPARABLE CORRELATIONS

  • Can Communication Power of Separable Correlations Exceed That of Entanglement Resource?

    Publikacja

    - PHYSICAL REVIEW LETTERS - Rok 2014

    The scenario of remote state preparation with a shared correlated quantum state and one bit of forward communication [B. Dakić et al., Nat. Phys. 8, 666 (2012)] is considered. Optimization of the transmission efficiency is extended to include general encoding and decoding strategies. The importance of the use of linear fidelity is recognized. It is shown that separable states cannot exceed the efficiency of entangled states by...

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  • Broadcast copies reveal the quantumness of correlations

    Publikacja

    - PHYSICAL REVIEW A - Rok 2009

    We study the quantumness of bipartite correlations by proposing a quantity that combines a measure of total correlations-mutual information-with the notion of broadcast copies-i.e., generally nonfactorized copies-of bipartite states. By analyzing how our quantity increases with the number of broadcast copies, we are able to classify classical, separable, and entangled states. This motivates the definition of the broadcast regularization...

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  • All Nonclassical Correlations Can Be Activated into Distillable Entanglement

    Publikacja
    • M. Piani
    • S. Gharibian
    • G. Adesso
    • J. Calsamigilia
    • P. Horodecki
    • A. Winter

    - PHYSICAL REVIEW LETTERS - Rok 2011

    We devise a protocol in which general nonclassical multipartite correlations produce a physically relevant effect, leading to the creation of bipartite entanglement. In particular, we show that the relative entropy of quantumness, which measures all nonclassical correlations among subsystems of a quantum system, is equivalent to and can be operationally interpreted as the minimum distillable entanglement generated between the system...

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