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Bell-type inequalities for non-local resources

Nicolas Brunner·Valerio Scarani·Nicolas Gisin
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Abstract

We present bipartite Bell-type inequalities which allow the two partners to use some non-local resource. Such inequality can only be violated if the parties use a resource which is more non-local than the one permitted by the inequality. We introduce a family of N-inputs non-local machines, which are generalizations of the well-known PR-box. Then we construct Bell-type inequalities that cannot be violated by strategies that use one these new machines. Finally we discuss implications for the simulation of quantum states.

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Nicolas Brunner, Valerio Scarani, Nicolas Gisin. 2006-03-10. Bell-type inequalities for non-local resources. https://doi.org/10.1063/1.2352857

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