Detecting nonlocality in many-body quantum states

J. Tura, R. Augusiak, A. B. Sainz, T. Vértesi, M. Lewenstein, A. Acín

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Intensive studies of entanglement properties have proven essential for our understanding of quantum many-body systems. In contrast, much less is known about the role of quantum nonlocality in these systems because the available multipartite Bell inequalities involve correlations among many particles, which are difficult to access experimentally. We constructed multipartite Bell inequalities that involve only two-body correlations and show how they reveal the nonlocality in many-body systems relevant for nuclear and atomic physics. Our inequalities are violated by any number of parties and can be tested by measuring total spin components, opening the way to the experimental detection of many-body nonlocality, for instance with atomic ensembles.

Original languageEnglish
Pages (from-to)1256-1258
Number of pages3
JournalScience
Volume344
Issue number6189
DOIs
Publication statusPublished - Jan 1 2014

ASJC Scopus subject areas

  • General

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    Tura, J., Augusiak, R., Sainz, A. B., Vértesi, T., Lewenstein, M., & Acín, A. (2014). Detecting nonlocality in many-body quantum states. Science, 344(6189), 1256-1258. https://doi.org/10.1126/science.1247715