Journal
OPTICS LETTERS
Volume 35, Issue 6, Pages 802-804Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.000802
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- Defense Advanced Research Projects Agency (DARPA) [W31P4Q-08-1-0006]
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We have constructed and experimentally characterized what we believe to be the first fiber-based source of degenerate polarization-entangled photon pairs in the telecommunication band. Our source design utilizes bichromatic pump pulses and an optical-fiber Sagnac loop aligned to deterministically separate degenerate photon pairs at a central wavelength. The source exhibits 0.997 +/- 0.006 fidelity with a maximally entangled state, measured using quantum state tomography. When reconfigured to produce identical photon pairs, the source exhibits a Hong-Ou-Mandel interference visibility of 0.97 +/- 0.04. (c) 2010 Optical Society of America
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