Four-photon interference: a realizable experiment to demonstrate violation of EPR postulates for perfect correlations
P. Hariharan, J. Samuel, Supurna Sinha
Abstract
Bell's theorem reveals contradictions between the predictions of quantum mechanics and the EPR postulates for a pair of particles only in situations involving imperfect statistical correlations. However, with three or more particles, contradictions emerge even for perfect correlations. We describe an experiment which can be realized in the laboratory, using four-photon entangled states generated by parametric down-conversion, to demonstrate this contradiction at the level of perfect correlations.
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