Physics – Quantum Physics
Scientific paper
2010-06-22
Physical Review Letters 105, 093604 (2010)
Physics
Quantum Physics
5 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.105.093604
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 $g^{(2)}_{683}(0) = 0.21 \pm 0.02$ and $g^{(2)}_{659}(0) = 0.19 \pm 0.05$ respectively, showing the nonclassical nature of both fields.
McGuinness Hayden J.
McKinstrie C. J.
Radic Sasa
Raymer Michael G.
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