Distinguishing Genuine Entangled Two-Photon-Polarization States from Independently Generated Pairs of Entangled Photons
Kenji Tsujino, Holger Friedrich Hofmann, Shigeki Takeuchi, Keiji Sasaki · Physical Review Letters · 2004
A scheme to distinguish entangled two-photon-polarization (ETP) states from two independent entangled one-photon-polarization (EOP) states is proposed. Using this scheme, the experimental generation of ETP by parametric down-conversion is confirmed through the anticorrelations among three orthogonal two-photon-polarization states. The estimated fraction of ETP among the correlated photon pairs is 37% in the present experimental setup.