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Optimal Bell Tests Do Not Require Maximally Entangled States

Published inPhysical review letters, vol. 95, no. 21
Publication date2005
Abstract

Any Bell test consists of a sequence of measurements on a quantum state in spacelike separated regions. Thus, a state is better than others for a Bell test when, for the optimal measurements and the same number of trials, the probability of existence of a local model for the observed outcomes is smaller. The maximization over states and measurements defines the optimal nonlocality proof. Numerical results show that the required optimal state does not have to be maximally entangled.

Citation (ISO format)
ACIN, Antonio, GILL, Richard, GISIN, Nicolas. Optimal Bell Tests Do Not Require Maximally Entangled States. In: Physical review letters, 2005, vol. 95, n° 21. doi: 10.1103/PhysRevLett.95.210402
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ISSN of the journal0031-9007
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