High-flux source of polarization-entangled photons from a periodically poled KTiOPO 4 parametric down-converter

By C. Kuklewicz, M. Fiorentino, G. Messin, F. Wong, Jeffrey H. Shapiro. 2003

138 citations recorded by the source corpus.

We have demonstrated a high-flux source of polarization-entangled photons using a type-II phase-matched periodically poled KTiOPO{sub 4} parametric down-converter in a collinearly propagating configuration. We have observed quantum interference between the single-beam down-converted photons with a visibility of 99% together with a measured coincidence flux of 300 s{sup -1}/mW of pump. The Clauser-Horne-Shimony-Holt version of Bell's inequality was violated with a value of 2.711{+-}0.017.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/4c91ec2170b67172f4ddf93e5c90dc8fa0674207