2004•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access

Distinguishing genuine entangled two-photon polarization states from independently generated pairs of entangled photons

Shigeki Takeuchi, Kenji Tsujino, Holger F. Hofmann, Keiji Sasaki

Abstract

A scheme to distinguish entangled two-photon-polarization states (ETP) from two independent it entangled one-photon-polarization states is proposed. Using this scheme, the experimental generation of ETP by parametric down-conversion is confirmed through the anti-correlations between three orthogonal two-photon-polarization states. The estimated fraction of ETP among the correlated photon pairs is 37% in the present experimental setup.

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Key concepts: Physics, Photon, Polarization (electrochemistry), Spontaneous parametric down-conversion, Photon entanglement, Photon polarization, Parametric statistics, Quantum mechanics