Strong coupling of excitons in monolayer WS2 with guided-mode resonance
Qi Wu, Leqing Wang, Hui Zhang, Jingjiu Deng, Yan Zhao, Jianqiang Liu, Jun Xiang, Shan Wu
Abstract
Strong photon-exciton coupling has garnered considerable interest due to its potential applications in quantum information processing, quantum light sources, and even quantum metrology. Here, we designed an “open cavity” consisting of monolayer WS2 and a square perforated SiN structure. By taking advantage of the guided-mode resonance with high quality factor excited in perforated SiN structure, the strong photon-exciton coupling with the Rabi splitting energies of about 40 meV can be obtained. Furthermore, the Rabi splitting can be engineered by varying the hole filling factor. Our findings provide a new way to achieve the TMD-based light-matter strong coupling.