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Optical Bell Measurement by Fock Filtering

MGA Paris, M Plenio, D Jonathan, S Bose, GM D'Ariano

quant-pharXiv:quant-ph/9911036

Abstract

We describe a nonlinear interferometric setup to perform a complete optical Bell measurement, i.e. to unambigously discriminate the four polarization entangled EPR-Bell photon pairs. The scheme is robust against detector inefficiency.

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