Strict detector-efficiency bounds for n-site Clauser-Horne inequalities

Details Strict detector-efficiency bounds for n-site Clauser-Horne inequalities Strict detector-efficiency bounds for n-site Clauser-Horne inequalities

2000-06-05

arxiv.org/abs/quant-ph/0006022v2

Phys. Rev. A 63, 022117 (2001)

Physics

Quantum Physics

revtex, 5 pages, 1 figure (typesetting changes only)

Scientific paper

10.1103/PhysRevA.63.022117

An analysis of detector-efficiency in many-site Clauser-Horne inequalities is presented, for the case of perfect visibility. It is shown that there is a violation of the presented n-site Clauser-Horne inequalities if and only if the efficiency is greater than n/(2n-1). Thus, for a two-site two-setting experiment there are no quantum-mechanical predictions that violate local realism unless the efficiency is greater than 2/3. Secondly, there are n-site experiments for which the quantum-mechanical predictions violate local realism whenever the efficiency exceeds 1/2.

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