All-fiber photon-pair source for quantum communications

Marco Fiorentino*, Paul L. Voss, Jay E. Sharping, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

271 Scopus citations


In this letter, we present a source of quantum-cor related photon pairs based on parametric fluorescence in a fiber Sagnac loop. The photon pairs are generated in the 1550-nm fiber-optic communication band and detected with InGaAs-InP avalanche photodiodes operating in a gated Geiger mode. A generation rate > 103 pairs/s is observed, which is limited by the detection electronics at present. We also demonstrate the nonclassical nature of the photon correlations in the pairs. This source, given its spectral properties and robustness, is well suited for use in fiber-optic quantum communication and cryptography networks.

Original languageEnglish (US)
Pages (from-to)983-985
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number7
StatePublished - Jul 2002


  • Fiber four-wave mixing
  • Parametric amplifiers
  • Photon counting
  • Quantum communication
  • Quantum cryptography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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