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arXiv · 2202.09622

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
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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 $\approx 4\times 10^4$, 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.

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Alexandre Chopin, Inès Ghorbel, Sylvain Combrié, Gabriel Marty, Fabrice Raineri, Alfredo De Rossi. 2022-02-19. Time-correlated Photons from a In$_{0.5}$Ga$_{0.5}$P Photonic Crystal Cavity on a Silicon Chip. https://arxiv.org/abs/2202.09622

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