Bound Nonlocality and Activation

Nicolas Brunner*, Daniel Cavalcanti, Alejo Salles, Paul Skrzypczyk

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

35 Citations (Scopus)

Abstract

We investigate nonlocality distillation using measures of nonlocality based on the Elitzur-Popescu-Rohrlich decomposition. For a certain number of copies of a given nonlocal box, we define two quantities of interest: (i) the nonlocal cost and (ii) the distillable nonlocality. We find that there exist boxes whose distillable nonlocality is strictly smaller than their nonlocal cost. Thus nonlocality displays a form of irreversibility which we term "bound nonlocality." Finally, we show that nonlocal distillability can be activated.

Original languageEnglish
Article number020402
Number of pages4
JournalPhysical Review Letters
Volume106
Issue number2
DOIs
Publication statusPublished - 10 Jan 2011

Keywords

  • QUANTUM NONLOCALITY
  • ENTANGLEMENT
  • THEOREM

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