Activation of nonlocal quantum resources

Miguel Navascués, Tamás Vértesi

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We find two two-qubit bipartite states ρ12 such that arbitrarily many copies of one or the other cannot exhibit nonlocal correlations in a two-setting-two-outcome Bell scenario. However, the bipartite state ρ12 violates the Clauser-Horne-Shimony- Holt (CHSH) Bell inequality by an amount of 2.023. We also identify a CHSH-local state ρ such that ρ-2 is CHSH inequality-violating. The tools employed can be easily adapted to find instances of nonlocality activation in arbitrary Bell scenarios.

Original languageEnglish
Article number060403
JournalPhysical review letters
Volume106
Issue number6
DOIs
Publication statusPublished - Feb 11 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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