Quantum frequency translation of single-photon states in a photonic crystal fiber.
We experimentally demonstrate frequency translation of a nonclassical optical field via four-wave mixing (Bragg-scattering process) in a photonic crystal fiber (PCF). The high nonlinearity and the ability to control dispersion in PCF enable efficient translation between nearby 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±2.2 percent. Second-order correlation measurements on the 683- and 659-nm fields yielded g(683)(2) (0)=0.21±0.02 and g(659)(2) (0)=0.19±0.05, respectively, showing the nonclassical nature of both fields.
McGuinness
H J
HJ
Oregon Center for Optics and Department of Physics, University of Oregon, Eugene, Oregon 97403, USA. hmcguinn@uoregon.edu
Raymer
M G
MG
McKinstrie
C J
CJ
Radic
S
S