Phys. Rev. A 69, 013807 (2004) [5 pages]High-flux source of polarization-entangled photons from a periodically poled KTiOPO4 parametric down-converterReceived 15 May 2003; published 15 January 2004 We have demonstrated a high-flux source of polarization-entangled photons using a type-II phase-matched periodically poled KTiOPO4 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 300s-1/mW of pump. The Clauser-Horne-Shimony-Holt version of Bell’s inequality was violated with a value of 2.711±0.017. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.013807
DOI:
10.1103/PhysRevA.69.013807
PACS:
42.65.Lm, 03.65.Ud, 42.50.Dv
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