New perspectives on quantum correlations

Nicolas Brunner*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

By performing well-chosen measurements on an entangled quantum state, distant observers can establish quantum non-local correlations. Gaining insight to such correlations is a challenging problem, important for both understanding the foundations of quantum mechanics and for developing applications in quantum information science. Here I present recent works progressing in this direction. In particular, after reviewing Bell's local model for quantum correlations, I will review Leggett's model, which focuses on individual properties. The incompatibility of both of these models with quantum predictions allows one to identify necessary conditions that any model aiming at reproducing the quantum correlations should satisfy. Remarkably, these constraints indicate a natural resource for simulating entanglement, namely the non-local box of Popescu and Rohrlich. I will conclude by reviewing such simulation models and discuss the insight they offer for understanding the relation between entanglement and non-locality. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)354-358
Number of pages5
JournalPhysica E: Low-dimensional Systems and Nanostructures
Volume42
Issue number3
DOIs
Publication statusPublished - Jan 2010
EventInternational Conference on Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT '08) - Prague, Czech Republic
Duration: 28 Jul 20082 Aug 2008

Keywords

  • Entanglement
  • Non-locality
  • HIDDEN-VARIABLE THEORIES
  • BELL INEQUALITIES
  • VIOLATION
  • NONLOCALITY
  • THEOREM
  • ENTANGLEMENT

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