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A high-flux source of polarization-entangled photons from a periodically-poled KTP parametric downconverter

Christopher E. Kuklewicz·Marco Fiorentino·Gaétan Messin·Franco N. C. Wong·Jeffrey H. Shapiro
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Abstract

We have demonstrated a high-flux source of polarization-entangled photons using a type-II phase-matched periodically-poled KTP parametric downconverter in a collinearly propagating configuration. We have observed quantum interference between the single-beam downconverted photons with a visibility of 99% and a measured coincidence flux of 300/s/mW of pump. The Clauser-Horne-Shimony-Holt version of Bell's inequality was violated with a value of 2.711 +/- 0.017.

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Christopher E. Kuklewicz, Marco Fiorentino, Gaétan Messin, Franco N. C. Wong, Jeffrey H. Shapiro. 2003-05-16. A high-flux source of polarization-entangled photons from a periodically-poled KTP parametric downconverter. https://doi.org/10.1103/physreva.69.013807

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