Phys. Rev. Lett. 95, 210402 (2005) [4 pages]Optimal Bell Tests Do Not Require Maximally Entangled StatesReceived 7 July 2005; published 17 November 2005 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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.210402
DOI:
10.1103/PhysRevLett.95.210402
PACS:
03.65.Ud, 03.67.−a
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