Southwest Quantum Information and TechnologyTenth Annual Meeting, February 14-17, 2008
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All Abstracts | Poster Abstracts | Talk Abstracts | Tutorial Abstracts Ultra-Low Noise Photon Pair Source in Dispersion Shifted Optical FiberShellee Dyer, National Institute of Standards and Technology (Session 11 : Sunday from 09:45-10:15) Collaborators: Shellee D. Dyer, Lenson Pellouchoud, and Sae Woo Nam Abstract. Single photon and photon pair sources are important resources for optical quantum information processing. We demonstrate a fiber-based photon pair source in which the photon pairs are generated through four-wave mixing in dispersion shifted fiber (DSF). Previous demonstrations of photon pair generation in DSF were limited by the strong Raman scattering background in the fiber. By cooling the fiber to 4 K, we demonstrate that we can achieve almost complete suppression of the Raman photons, yielding a coincidence-to-accidental ratio larger than 300, exceeding previous best-case results by a factor of 4. |