Fiber Based Source of Frequency Entangled Photon Pairs in the Telecom Band
Xiaoying Li, Lei Yang, Liang Cui, Xiaoxin Ma, Zhe Yu Ou · 2009
Frequency entangled photon pairs generated by using four wave mixing in a Sagnac fiber loop are presented. Coincidence detection shows the quantum interference in the form of spatial beating with a visibility of (95±2)%.