We show photon pair generation from spontaneous four-wave mixing in dispersion-shifted fiber. By cooling the fiber to 4 K, we achieve almost complete suppression of the Raman photons, yielding a coincidence-to-accidental ratio of approximately 360, exceeding previous best-case results by a factor of 4.
Proceedings Title: Quantum Electronics and Laser Science
Conference Dates: May 4-9, 2008
Conference Location: San Jose, CA
Pub Type: Conferences
fiber optics, nonlinear optics, quantum detectors, quantum optics