4.8 Article

Entanglement and Nonlocality are Inequivalent for Any Number of Parties

Journal

PHYSICAL REVIEW LETTERS
Volume 115, Issue 3, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.030404

Keywords

-

Funding

  1. EU ERC
  2. EU
  3. Spanish project FOQUS
  4. John Templeton Foundation
  5. Generalitat de Catalunya [SGR875]
  6. Spanish MINECO through the Juan de la Cierva program
  7. ICREA Funding Source: Custom

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Understanding the relation between nonlocality and entanglement is one of the fundamental problems in quantum physics. In the bipartite case, it is known that these two phenomena are inequivalent, as there exist entangled states of two parties that do not violate any Bell inequality. However, except for a single example of an entangled three-qubit state that has a local model, almost nothing is known about such a relation in multipartite systems. We provide a general construction of genuinely multipartite entangled states that do not display genuinely multipartite nonlocality, thus proving that entanglement and nonlocality are inequivalent for any number of parties.

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