Fiber-based telecom-band degenerate-frequency source of entangled photon pairs

Jun Chen, Kim Fook Lee, Chuang Liang, Prem Kumar

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2798-2800
Number of pages3
JournalOptics Letters
Issue number18
StatePublished - Sep 15 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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