Back to Publications List       A frequency-nondegenerate entanglement source using periodically-poled lithium niobate E.J. Mason, M.A. Albota, F. Koenig, and F.N.C. Wong Proceedings of the Sixth International Conference on Quantum Communication, Measurement and Computing, J.H. Shapiro and O. Hirota, eds. (Rinton Press, Princeton, 2003). Abstract We demonstrate efficient generation of highly nondegenerate photon pairs with a type-I phase-matched, periodically-poled lithium niobate parametric downconverter.  The signal photons at 800nm and the idler photons at 1600nm were generated in a collinear-propagation configuration with an inferred pair generation rate of 1.4×10^7/s/mW of pump power. Detection of a signal photon triggered 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, the signal-conditioned idler-detection probability was ~3.1%.         Home | About the Program | Our Research | Publications | People Related MURIs | Contact © Massachusetts Institute of Technology