Photon pair generation 1310 – 1550 nm based on active photonic crystal: Heralded single photon source model

We report a heralded single photon source model; it consists on active two-dimensional crystal over LiNbO₃ excited by a laser source at (1310 nm and 1550 nm). Photons detected through the crystal are filtered to eliminate of the laser source one. The photons at 1310 nm and 1550 nm will be spatially separated; the photon at 1310 nm is the trigger to announce the photon at 1550 nm. The contribution of this work is the using of the 2D photonic crystal to improve the conversion light efficiency and obtain height DOM at 1310 nm and 1550 nm, which will increase the probability to obtain single photon. This study can serve for the conception of new quantum communications protocols.