Time-correlated photons from an In_{0.5}Ga_{0.5}P photonic crystal cavity on a silicon chip

Time-correlated photon pairs are generated by triply resonant four-wave-mixing in an In_{0.5}Ga_{0.5}P photonic crystal cavity. Maximal efficiency is reached by actively compensating for the residual spectral misalignment of the cavity modes. The generation rate reaches 5 MHz in cavities with a Q-fa...

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Bibliographic Details
Published in:Physical review research 2022-11, Vol.4 (4), p.043132
Main Authors: Alexandre Chopin, Inès Ghorbel, Sylvain Combrié, Gabriel Marty, Fabrice Raineri, Alfredo De Rossi
Format: Article
Language:English
Online Access:Get full text
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Summary:Time-correlated photon pairs are generated by triply resonant four-wave-mixing in an In_{0.5}Ga_{0.5}P photonic crystal cavity. Maximal efficiency is reached by actively compensating for the residual spectral misalignment of the cavity modes. The generation rate reaches 5 MHz in cavities with a Q-factor ≈4×10^{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.
ISSN:2643-1564
DOI:10.1103/PhysRevResearch.4.043132