A hybrid single quantum dot coupled cavity on a CMOS-compatible SiC photonic chip for Purcell-enhanced deterministic single-photon emission

• DOI: 10.1038/s41377-024-01676-y
• Publication Date: 2025-02-14T04:45:17Z
• Authors: Yifan Zhu; Runze Liu; Ailun Yi; Xudong Wang; Yuanhao Qin; Zihao Zhao; Junyi Zhao; Bowen Chen; Xiuqi Zhang; Sannian Song; Yongheng Huo; Xin Ou; Jiaxiang Zhang
• Keywords: Purcell effect; Single-Photon Source; Optical microcavity

The ability to control nonclassical light emission from a single quantum emitter by an integrated cavity may unleash new perspectives for photonic applications. However, coupling within circuitry towards creation of the Purcell-enhanced single-photon is elusive due complexity integrating active devices in low-loss circuits. Here we demonstrate hybrid micro-ring resonator (HMRR) coupled with self-assembled dots (QDs) cavity-enhanced deterministic emission. HMRR supports whispering-gallery modes quality factors up 7800. By further introducing micro-heater, show that photon QDs can be locally and dynamically tuned over one free spectral ranges (~4 nm). This allows precise tuning individual resonance modes, thereby enhancing Purcell factor about 4.9. Our results on cavities two-level emitters emerge as promising chip-based scalable