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Frequency entangled photon sources are in high demand in a variety of opticalquantum technologies, including quantum key distribution, cluster state quantumcomputation and quantum metrology. In the recent decade, chip-scale entangledphoton sources have been developed using silicon platforms, offeringrobustness, large scalability and CMOS technology compatibility. Here, wereport the generation of frequency correlated photon pairs using a 150-GHzsilicon nitride ring cavity. First, the device is characterized for studyingthe phase matching condition during spontaneous four-wave mixing. Next, weevaluate the joint spectrum intensity of the generated photons and confirm thephoton pair generation in a total of42 correlated frequency mode pairs,corresponding to a bandwidth of 51.25 nm. Finally, the experimental results areanalyzed and the joint spectral intensity is quantified in terms of the phasematching condition.

Frequency correlated photon generation at telecom band using silicon nitride ring cavities