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

Jan-Åke Larsson·Jason Semitecolos
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Abstract

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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Jan-Åke Larsson, Jason Semitecolos. 2000-06-05. Strict detector-efficiency bounds for n-site Clauser-Horne inequalities. https://doi.org/10.1103/physreva.63.022117

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