Persistency of entanglement and nonlocality in multipartite quantum systems

Nicolas Brunner, T. Vértesi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The behavior under particle loss of entanglement and nonlocality is investigated in multipartite quantum systems. In particular, we define a notion of persistency of nonlocality, which leads to device-independent tests of persistent entanglement. We investigate the persistency of various classes of multipartite quantum states, exhibiting a variety of different behaviors. A particular attention is devoted to states featuring maximal persistency. Finally we discuss a link between the symmetry of a state and its persistency, illustrating the fact that too much symmetry reduces the strength of correlations among subsystems. These ideas also lead to a device-independent estimation of the asymmetry of a quantum state.

Original languageEnglish
Article number042113
JournalPhysical Review A
Volume86
Issue number4
DOIs
Publication statusPublished - Oct 12 2012

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Persistency of entanglement and nonlocality in multipartite quantum systems. / Brunner, Nicolas; Vértesi, T.

In: Physical Review A, Vol. 86, No. 4, 042113, 12.10.2012.

Research output: Contribution to journalArticle

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