] 2 9 Ju n 20 05 1 Four - photon interference : a realizable experiment to demonstrate violation of EPR postulates for perfect correlations
نویسندگان
چکیده
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 para-metric down-conversion, to demonstrate this contradiction at the level of perfect correlations.
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