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Generation and distribution of quantum entanglement in the telecom band with standard optical fiber

X. Li, P. Voss, J. E. Sharping, J. Chen, and P. Kumar

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Abstract

Polarization entangled photon pairs are produced by pumping the nonlinear-fiber Sagnac interferometer with orthogonally-polarized pulses. Parametrically scattered signal-idler photons yield biphoton interference with visibility greater than 95% in coincidence. When signal-idler photon pairs are physically propagated over 25 km of standard optical fiber, the quantum correlation is preserved.

© 2003 Optical Society of America

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