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Cavity Quantum Electrodynamics with Second-Order Topological Corner State

2020-09-14

Author(s): Xie, X (Xie, Xin); Zhang, WX (Zhang, Weixuan); He, XW (He, Xiaowu); Wu, SY (Wu, Shiyao); Dang, JC (Dang, Jianchen); Peng, K (Peng, Kai); Song, FL (Song, Feilong); Yang, LL (Yang, Longlong); Ni, HQ (Ni, Haiqiao); Niu, ZC (Niu, Zhichuan); Wang, C (Wang, Can); Jin, KJ (Jin, Kuijuan); Zhang, XD (Zhang, Xiangdong); Xu, XL (Xu, Xiulai)

Source: LASER & PHOTONICS REVIEWS Volume: 14 Issue: 8 Article Number: 1900425 DOI: 10.1002/lpor.201900425 Published: AUG 2020

Abstract: Topological photonics provides a new paradigm in studying cavity quantum electrodynamics with robustness to disorder. In this work, the coupling between single quantum dots and the second-order topological corner state are demonstrated. Based on the second-order topological corner state, a topological photonic crystal cavity is designed and fabricated into GaAs slabs with quantum dots embedded. The coexistence of corner state and edge state with high quality factor close to 2000 is observed. The enhancement of photoluminescence intensity and emission rate are both observed when the quantum dot is on resonance with the corner state. This result enables the application of topology into cavity quantum electrodynamics, offering an approach to topological devices for quantum information processing.

Accession Number: WOS:000562756000007

ISSN: 1863-8880

eISSN: 1863-8899

Full Text: https://onlinelibrary.wiley.com/doi/full/10.1002/lpor.201900425



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