Tight Bell inequality for d-outcome measurements correlations

Details Tight Bell inequality for d-outcome measurements correlations Tight Bell inequality for d-outcome measurements correlations

2002-10-10

arxiv.org/abs/quant-ph/0210073v1

Quantum Information and Computation, Vol.3, No.4, 345 (2002)

Physics

Quantum Physics

10 pages

Scientific paper

In this paper we prove that the inequality introduced by Collins, Gisin, Linden, Massar and Popescu is tight, or in other words, it is a facet of the convex polytope generated by all local-realistic joint probabilities of d outcomes. This means that this inequality is optimal. We also show that, for correlation functions generalized to deal with three-outcome measurements, the satisfyability of this inequality is a necessary and sufficient condition for the existence of a local-realistic model accounting for them.

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