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Diabolical points in coupled active cavities with quantum emitters.

ABSTRACT: In single microdisks, embedded active emitters intrinsically affect the cavity modes of the microdisks, resulting in trivial symmetric backscattering and low controllability. Here we demonstrate macroscopic control of the backscattering direction by optimizing the cavity size. The signature of the positive and negative backscattering directions in each single microdisk is confirmed with two strongly coupled microdisks. Furthermore, diabolical points are achieved at the resonance of the two microdisks, which agrees well with theoretical calculations considering the backscattering directions. Diabolical points in active optical structures pave the way for an implementation of quantum information processing with geometric phase in quantum photonic networks.

SUBMITTER: Yang J

PROVIDER: S-EPMC6957493 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Diabolical points in coupled active cavities with quantum emitters.

Yang Jingnan J Qian Chenjiang C Xie Xin X Peng Kai K Wu Shiyao S Song Feilong F Sun Sibai S Dang Jianchen J Yu Yang Y Shi Shushu S He Jiongji J Steer Matthew J MJ Thayne Iain G IG Li Bei-Bei BB Bo Fang F Xiao Yun-Feng YF Zuo Zhanchun Z Jin Kuijuan K Gu Changzhi C Xu Xiulai X

Light, science & applications 20200113

In single microdisks, embedded active emitters intrinsically affect the cavity modes of the microdisks, resulting in trivial symmetric backscattering and low controllability. Here we demonstrate macroscopic control of the backscattering direction by optimizing the cavity size. The signature of the positive and negative backscattering directions in each single microdisk is confirmed with two strongly coupled microdisks. Furthermore, diabolical points are achieved at the resonance of the two micro ...[more]

PMID: 31969981

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