Generation of frequency-bin entangled narrowband biphotons and their Bell test
Xianxin Guo, Yefeng Mei, Shengwang Du · 2017
We report the generation of frequency-bin entangled narrowband biphotons from spontaneous four-wave mixing (SFWM). Making use of time-resolved detection, we observe violation of the CHSH Bell inequality and confirm the genuine entanglement.