Time-correlated Photons from a In$_{0.5}$Ga$_{0.5}$P Photonic Crystal Cavity on a Silicon Chip

Alexandre Chopin; Inès Ghorbel; Sylvain Combrié; Gabriel Marty; Fabrice Raineri; Alfredo De Rossi

paper

Time-correlated Photons from a In $_{0.5}$ Ga $_{0.5}$ P Photonic Crystal Cavity on a Silicon Chip

arXiv:2202.09622

Abstract

Time-correlated photon pairs are generated by triply-resonant Four-Wave-Mixing in a In $_{0.5}$ Ga $_{0.5}$ P Photonic Crystal cavitiy. Maximal efficiency is reached by actively compensating the residual spectral misalignment of the cavity modes. The generation rate reaches 5 MHz in cavities with Q-factor $\approx 4 \times 1 0^{4}$ , more than one order of magnitude larger than what is measured using ring resonators with similar Q factors fabricated on the same chip. The Photonic Crystal source is integrated on a Si photonic circuit, an important asset for applications in quantum technologies.

Time-correlated Photons from a In0.5​Ga0.5​P Photonic Crystal Cavity on a Silicon Chip

Abstract

Time-correlated Photons from a In $_{0.5}$ Ga $_{0.5}$ P Photonic Crystal Cavity on a Silicon Chip