Joint measurability, Einstein-Podolsky-Rosen steering, and bell nonlocality

Marco Túlio Quintino, Tamás Vértesi, Nicolas Brunner

Research output: Contribution to journalArticle

125 Citations (Scopus)


We investigate the relation between the incompatibility of quantum measurements and quantum nonlocality. We show that a set of measurements is not jointly measurable (i.e., incompatible) if and only if it can be used for demonstrating Einstein-Podolsky-Rosen steering, a form of quantum nonlocality. Moreover, we discuss the connection between Bell nonlocality and joint measurability, and give evidence that both notions are inequivalent. Specifically, we exhibit a set of incompatible quantum measurements and show that it does not violate a large class of Bell inequalities. This suggests the existence of incompatible quantum measurements which are Bell local, similarly to certain entangled states which admit a local hidden variable model.

Original languageEnglish
Article number160402
JournalPhysical review letters
Issue number16
Publication statusPublished - Oct 14 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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