Quantum Frequency Translation of Single-Photon States in Photonic Crystal Fiber

Abstract

We experimentally demonstrate frequency translation of a nonclassical optical field via the Bragg scattering four-wave mixing process in a photonic crystal fiber (PCF). The high nonlinearity and the ability to control dispersion in PCF enable efficient translation between photon channels within the visible to-near-infrared spectral range, useful in quantum networks. Heralded single photons at 683 nm were translated to 659 nm with an efficiency of $28.6\pm 2.2$ percent. Second-order correlation measurements on the 683-nm and 659-nm fields yielded $g_{683}^{(2)}(0)=0.21\pm 0.02$ and $g_{659}^{(2)}(0)=0.19\pm 0.05$ respectively, showing the nonclassical nature of both fields.

5 pages, 3 figures

References in corpus (1)

• Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber

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