Frequency entangled photon sources are in high demand in a variety of optical quantum technologies, including quantum key distribution, cluster state quantum computation and quantum metrology. In the recent decade, chip-scale entangled photon sources have been developed using silicon platforms, offering robustness, large scalability and CMOS technology compatibility. Here, we report the generation of frequency correlated photon pairs using a 150-GHz silicon nitride ring cavity. First, the device is characterized for studying the phase matching condition during spontaneous four-wave mixing. Next, we evaluate the joint spectrum intensity of the generated photons and confirm the photon pair generation in a total of42 correlated frequency mode pairs, corresponding to a bandwidth of 51.25 nm. Finally, the experimental results are analyzed and the joint spectral intensity is quantified in terms of the phase matching condition.
@article{arxiv.2102.03005,
title = {Frequency correlated photon generation at telecom band using silicon nitride ring cavities},
author = {Zhenghao Yin and Kenta Sugiura and Hideaki Takashima and Ryo Okamoto and Feng Qiu and Shiyoshi Yokoyama and Shigeki Takeuchi},
journal= {arXiv preprint arXiv:2102.03005},
year = {2021}
}