Fully nonlocal quantum correlations

Leandro Aolita, Rodrigo Gallego, Antonio Acín, Andrea Chiuri, Giuseppe Vallone, Paolo Mataloni, and Adán Cabello
Phys. Rev. A 85, 032107 – Published 5 March 2012

Abstract

Quantum mechanics is a nonlocal theory, but not as nonlocal as the no-signalling principle allows. However, there exist quantum correlations that exhibit maximal nonlocality: they are as nonlocal as any nonsignalling correlation and thus have a local content, quantified by the fraction pL of events admitting a local description, equal to zero. We exploit the known link between the Kochen-Specker and Bell theorems to derive a maximal violation of a Bell inequality from every Kochen-Specker proof. We then show that these Bell inequalities lead to experimental bounds on the local content of quantum correlations that are significantly better than those based on other constructions. We perform the experimental demonstration of a Bell test originating from the Peres-Mermin Kochen-Specker proof, providing an upper bound on the local content pL0.22.

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  • Received 18 May 2011

DOI:https://doi.org/10.1103/PhysRevA.85.032107

©2012 American Physical Society

Authors & Affiliations

Leandro Aolita1, Rodrigo Gallego1, Antonio Acín1,2, Andrea Chiuri3, Giuseppe Vallone3,4, Paolo Mataloni3,5, and Adán Cabello6,7

  • 1Institut de Ciències Fotòniques, E-08860 Castelldefels, Barcelona, Spain
  • 2Institució Catalana de Recerca i Estudis Avançats, Lluis Companys 23, E-08010 Barcelona, Spain
  • 3Dipartimento di Fisica, Università Sapienza di Roma, I-00185 Roma, Italy
  • 4Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Via Panisperna 89/A, Compendio del Viminale, I-00184 Roma, Italy
  • 5Istituto Nazionale di Ottica, CNR, Largo E. Fermi 6, I-50125 Florence, Italy
  • 6Departamento de Física Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain
  • 7Department of Physics, Stockholm University, S-10691 Stockholm, Sweden

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Issue

Vol. 85, Iss. 3 — March 2012

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