Maryland : American Physical Society
InJaeger e.a., G. (ed.), Conference: (1327) Advances in Quantum Theory - Vaxjo, Sweden , 14 June 2010 - 17 June 2010, pp. 36-53
Article in monograph or in proceedings
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Jaeger e.a., G.
Leerstoel Geschiedenis van de filosofie
Kernleerstoel Geschiedenis van de Filosofie
Jaeger e.a., G. (ed.), Conference: (1327) Advances in Quantum Theory - Vaxjo, Sweden , 14 June 2010 - 17 June 2010
SubjectFrom Natural Philosophy to Science
The no-signaling constraint on bi-partite correlations is reviewed. It is shown that in order to obtain non-trivial Bell-type inequalities that discern no-signaling correlations from more general ones, one must go beyond considering expectation values of products of observables only. A new set of nontrivial no-signaling inequalities is derived which have a remarkably close resemblance to the CHSH inequality, yet are fundamentally different. A set of inequalities by Roy and Singh  and Avis et al.. , which is claimed to be useful for discerning no-signaling correlations, is shown to be trivially satisfied by any correlation whatsoever. Finally, using the set of newly derived no-signaling inequalities a result with potential cryptographic consequences is proven: if different parties use identical devices, then, once they have perfect correlations at spacelike separation between dichotomic observables, they know that because of no-signaling the local marginals cannot but be completely random
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