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Paper detail

Cavity Quantum Electrodynamics with Second-Order Topological Corner State

Topological photonics provides a new paradigm in studying cavity quantum electrodynamics with robustness to disorder. In this work, we demonstrate the coupling between single quantum dots and the second-order topological corner state. 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.

preprint2020arXivOpen access
Xin XieWeixuan ZhangXiaowu HeShiyao WuJianchen DangKai PengFeilong SongLonglong YangHaiqiao NiZhichuan NiuCan WangKuijuan JinXiangdong ZhangXiulai Xu
cond-mat.mes-hallquant-ph
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Xin XieWeixuan ZhangXiaowu HeShiyao WuJianchen DangKai PengFeilong SongLonglong YangHaiqiao NiZhichuan NiuCan WangKuijuan JinXiangdong ZhangXiulai Xu

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