Spontaneous four-wave mixing in liquid-core fibers: towards fibered Raman-free correlated photon sources

Margaux Barbier (1) , Isabelle Zaquine (2) , Philippe Delaye (1)

1 Laboratoire Charles Fabry / Manolia
2 TSI - Département Traitement du Signal et des Images

We experimentally demonstrate, for the first time to our knowledge, the generation of correlated photon pairs in a liquid-core photonic crystal fiber. Moreover, we show that, thanks to the specific Raman properties of liquids, the Raman noise (which is the main limitation of the performance of silica-core fiber-based correlated photon pair sources) is highly reduced. With a demonstrated coincident-to-accidental ratio equal to 63 and a pair generation efficiency of about 10 −4 per pump pulse, this work contributes to the development of high-quality correlated photon pair sources for quantum communications.

Keywords: correlated photon pairs; spontaneous four-wave mixing; liquid-core photonic crystal fibers

Domains: Optics [physics.optics]

Margaux Barbier, Isabelle Zaquine, Philippe Delaye. Spontaneous four-wave mixing in liquid-core fibers: towards fibered Raman-free correlated photon sources . New Journal of Physics, 2015, 17, pp.053001(1-11). ⟨10.1088/1367-2630/17/5/053031⟩. ⟨hal-01192679⟩