Cavity Quantum Electrodynamics with Second-Order Topological Corner State

Xin Xie; Weixuan Zhang; Xiaowu He; Shiyao Wu; Jianchen Dang; Kai Peng; Feilong Song; Longlong Yang; Haiqiao Ni; Zhichuan Niu; Can Wang; Kuijuan Jin; Xiangdong Zhang; Xiulai Xu

doi:10.1002/lpor.201900425

Cavity Quantum Electrodynamics with Second-Order Topological Corner State

Xin Xie, Weixuan Zhang, Xiaowu He, Shiyao Wu, Jianchen Dang, Kai Peng, Feilong Song, Longlong Yang, Haiqiao Ni, Zhichuan Niu, Can Wang, Kuijuan Jin, Xiangdong Zhang^*, Xiulai Xu^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

88 Citations (Scopus)

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.

Original language	English
Article number	1900425
Journal	Laser and Photonics Reviews
Volume	14
Issue number	8
DOIs	https://doi.org/10.1002/lpor.201900425
Publication status	Published - 1 Aug 2020

Keywords

Purcell enhancement
cavity quantum electrodynamics
topological corner state
topological photonics

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10.1002/lpor.201900425

Cite this

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title = "Cavity Quantum Electrodynamics with Second-Order Topological Corner State",

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.",

keywords = "Purcell enhancement, cavity quantum electrodynamics, topological corner state, topological photonics",

author = "Xin Xie and Weixuan Zhang and Xiaowu He and Shiyao Wu and Jianchen Dang and Kai Peng and Feilong Song and Longlong Yang and Haiqiao Ni and Zhichuan Niu and Can Wang and Kuijuan Jin and Xiangdong Zhang and Xiulai Xu",

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T1 - Cavity Quantum Electrodynamics with Second-Order Topological Corner State

AU - Xie, Xin

AU - Zhang, Weixuan

AU - He, Xiaowu

AU - Wu, Shiyao

AU - Dang, Jianchen

AU - Peng, Kai

AU - Song, Feilong

AU - Yang, Longlong

AU - Ni, Haiqiao

AU - Niu, Zhichuan

AU - Wang, Can

AU - Jin, Kuijuan

AU - Zhang, Xiangdong

AU - Xu, Xiulai

PY - 2020/8/1

Y1 - 2020/8/1

N2 - 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.

AB - 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.

KW - Purcell enhancement

KW - cavity quantum electrodynamics

KW - topological corner state

KW - topological photonics

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DO - 10.1002/lpor.201900425

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JO - Laser and Photonics Reviews

JF - Laser and Photonics Reviews

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Cavity Quantum Electrodynamics with Second-Order Topological Corner State

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