Optimal Generation of Pulsed Entangled Photon Pairs

Details Optimal Generation of Pulsed Entangled Photon Pairs Optimal Generation of Pulsed Entangled Photon Pairs

2006-04-08

arxiv.org/abs/quant-ph/0604051v1

Physics

Quantum Physics

8 pages, 6 figures

Scientific paper

10.1103/PhysRevA.74.013802

We experimentally investigate a double-pass parametric down-conversion scheme for producing pulsed, polarization-entangled photon pairs with high visibility. The amplitudes for creating photon pairs on each pass interfere to compensate for distinguishing characteristics that normally degrade two-photon visibility. The result is a high-flux source of polarization-entangled photon pulses that does not require spectral filtering. We observe quantum interference visibility of over 95% without the use of spectral filters for 200 femtosecond pulses, and up to 98.1% with 5 nm bandwidth filters.

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