Fiber-based telecom-band degenerate-frequency source of entangled photon pairs |
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| Authors: | Chen Jun Lee Kim Fook Liang Chuang Kumar Prem |
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| Affiliation: | Center for Photonic Communication and Computing, Department of Electrical Engineering and Computer Science Northwestern University, Evanston, IL 60208-3118, USA. junchen@ece.northwestern.edu |
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| Abstract: | We demonstrate the generation of polarization-entangled photon pairs of degenerate frequency for the first time, to the best of our knowledge, in standard optical fiber using a novel dual-pump, counterpropagating configuration. Two-photon interference with >97% visibility is obtained. The purity of the photon source, as characterized by the ratio of coincidence to accidental-coincidence counts, is shown to be as high as 116 under suitable operating conditions. |
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