Quantum Light Generation based on GaN Microring towards Fully On-chip Source

Hong Zeng; Zhao-Qin He; Yun-Ru Fan; Yue Luo; Chen Lyu; Jin-Peng Wu; Yun-Bo Li; Sheng Liu; Dong Wang; De-Chao Zhang; Juan-Juan Zeng; Guang-Wei Deng; You Wang; Hai-Zhi Song; Zhen Wang; Li-Xing You; Kai Guo; Chang-Zheng Sun; Yi Luo; Guang-Can Guo; Qiang Zhou

arXiv · 2402.08888

Quantum Light Generation based on GaN Microring towards Fully On-chip Source

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Abstract

Integrated quantum light source is increasingly desirable in large-scale quantum information processing.~Despite recent remarkable advances, new material platform is constantly being explored for the fully on-chip integration of quantum light generation, active and passive manipulation, and detection. Here, for the first time, we demonstrate a gallium nitride (GaN) microring based quantum light generation in the telecom C-band, which has potential towards the monolithic integration of quantum light source.~In our demonstration, the GaN microring has a free spectral range of 330 GHz and a near-zero anomalous dispersion region of over 100 nm. The generation of energy-time entangled photon pair is demonstrated with a typical raw two-photon interference visibility of 95.5$\pm$6.5%, which is further configured to generate heralded single photon with a typical heralded second-order auto-correlation $g^{(2)}_{H}(0)$ of 0.045$\pm$0.001. Our results pave the way for developing chip-scale quantum photonic circuit.

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Hong Zeng, Zhao-Qin He, Yun-Ru Fan, Yue Luo, Chen Lyu, Jin-Peng Wu, Yun-Bo Li, Sheng Liu, Dong Wang, De-Chao Zhang, Juan-Juan Zeng, Guang-Wei Deng, You Wang, Hai-Zhi Song, Zhen Wang, Li-Xing You, Kai Guo, Chang-Zheng Sun, Yi Luo, Guang-Can Guo, Qiang Zhou. 2024-02-14. Quantum Light Generation based on GaN Microring towards Fully On-chip Source. https://arxiv.org/abs/2402.08888

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