Quadratic bell inequalities as tests for multipartite entanglement

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Abstract

Quadratic Bell inequalities for testing the entanglement of multiparticle states were presented. Quantum mechanical inequalities for systems of n spin-1/2 particles (n>2) were analyzed. The inequalities distinguished between fully entangled states and states in which at most n-1 particles were entangled. Results showed that the derived inequalities did not hold for non-quantum mechanical hidden variable (HV) theories.

Original languageEnglish (US)
Article number230406
Pages (from-to)2304061-2304064
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number23
DOIs
StatePublished - 2002

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