Entangled photon pair generation from an InP membrane micro-ring resonator

We performed quantum interference measurements using photon pairs generated via cavity enhanced spontaneous four-wave mixing in an indium phosphide membrane micro-ring resonator which was optically pumped by a continuous-wave laser. The internal generation rate was estimated to be as high as 70 kHz at a coupled input power of 0.022 mW, and a two-photon quantum interference raw visibility of 78.4 ± 2% was observed.