A family of local models containing two angles as hidden variables is
defined for experiments measuring polarization correlation of optical
photons. Searching for the best model of the family, that is giving
predictions most close to quantum mechanics, allows deriving Bell-type
inequalities which may be tested with relatively low detection efficiency.
03.65.Ud Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) 42.50.Ar Photon statistics and coherence theory
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J.S. Bell, Speakable and unspeakable in quantum
mechanics (Cambridge University Press, Cambridge, 1987). This book contains
reprints of most of Bell's papers about foundations of quantum mechanics
W. Laskowski, M. Żukowski,
Phys. Rev. A 72, 062112 (2004); M. Żukowski, All tight multipartite
Bell correlation inequalities for three dicotimic observables per observer,
e-print arXiv:quant-ph/0611086 (2006)