Efficient generation of tunable photon pairs at 0.8 and 1.6 micrometer

Details Efficient generation of tunable photon pairs at 0.8 and 1.6 micrometer Efficient generation of tunable photon pairs at 0.8 and 1.6 micrometer

2002-07-26

arxiv.org/abs/quant-ph/0207156v1

Physics

Quantum Physics

8 pages, 3 figures

Scientific paper

10.1364/OL.27.002115

We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs in a periodically-poled lithium niobate cw parametric downconverter with an inferred pair generation rate of 1.4*10^7/s/mW of pump power. Detection of an 800-nm signal photon triggers a thermoelectrically-cooled 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, we obtain a signal-conditioned idler-detection probability of about 3.1%.

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