Quantum information theory: Enviaments recents

Ara es mostren els items 13-19 de 19

    • Thermodynamics of creating correlations: Limitations and optimal protocols 

      Bruschi, David Edward; Perarnau-Llobet, Martí; Friis, Nicolai; Hovhannisyan, Karen V.; Huber, Marcus (APS Physics, 2015-03-11)
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      Accés obert
      We establish a rigorous connection between fundamental resource theories at the quantum scale. Correlations and entanglement constitute indispensable resources for numerous quantum information tasks. However, their establishment ...

    • Almost quantum correlations 

      Navascués, Miguel; Guryanova, Yelena; Hoban, Matty J.; Acín dal Maschio, Antonio (Nature Publishing group, 2015-02-20)
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      Accés obert
      Quantum theory is not only successfully tested in laboratories every day but also constitutes a robust theoretical framework: small variations usually lead to implausible consequences, such as faster-than-light communication. ...

    • Optimal randomness generation from optical Bell experiments 

      Máttar, Ajenadro; Skrzypczyk, Paul; Brask, Jonatan Bohr; Cavalcanti, Daniel; Acín dal Maschio, Antonio (IOP, 2015-02-10)
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      Accés obert

    • A Combinatorial Approach to Nonlocality and Contextuality 

      Acín dal Maschio, Antonio; Fritz, Tobias; Leverrier, Anthony (Springer, 2015-03-01)
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      Accés obert
      So far, most of the literature on (quantum) contextuality and the Kochen– Specker theorem seems either to concern particular examples of contextuality, or be considered as quantum logic. Here, we develop a general formalism ...

    • Quantifying multipartite nonlocality via the size of the resource 

      Curchod, Florian John; Gisin, Nicolas; Liang, Yeong-Cherng (APS Physics, 2015-01-30)
      Article
      Accés obert
      The generation of (Bell-)nonlocal correlations, i.e., correlations leading to the violation of a Bell-like inequality, requires the usage of a nonlocal resource, such as an entangled state. When given a correlation (a ...

    • Quantum many-body systems out of equilibrium 

      Eisert, J.; Friesdorf, M.; Gogolin, Christian (Nature Publishing group, 2015-02-03)
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      Accés obert
      How do closed quantum many-body systems driven out of equilibrium eventually achieve equilibration? And how do these systems thermalize, given that they comprise so many degrees of freedom? Progress in answering these—and ...

    • Elemental and tight monogamy relations in nonsignaling theories 

      Augusiak, Remigiusz; Demianowicz, Maciej; Pawłowski, M.; Tura, Jordi; Antonio, Acín Dal Maschio (American Physical Society, 2014-11-17)
      Article
      Accés obert
      Physical principles constrain the way nonlocal correlations can be distributed among distant parties. These constraints are usually expressed by monogamy relations that bound the amount of Bell inequality violation observed ...