Diabolical points in coupled active cavities with quantum emitters

Jingnan Yang; Chenjiang Qian; Xin Xie; Kai Peng; Shiyao Wu; Feilong Song; Sibai Sun; Jianchen Dang; Yang Yu; Shushu Shi; Jiongji He; Matthew J. Steer; Iain G. Thayne; Bei-Bei Li; Fang Bo; Yun-Feng Xiao; Zhanchun Zuo; Kuijuan Jin; Changzhi Gu; Xiulai Xu

doi:10.1038/s41377-020-0244-9

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Diabolical points in coupled active cavities with quantum emitters

Article

- Diabolical points in coupled active cavities with quantum emitters
- Light: Science & Applications Vol. 9, Issue 1, Pages: 52-59(2020)
- Affiliations：
  
  1.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  2.CAS Center for Excellence in Topological Quantum Computation and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  3.School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
  4.The MOE Key Laboratory of Weak Light Nonlinear Photonics, TEDA Applied Physics Institute and School of Physics, Nankai University, Tianjin 300457, China
  5.State Key Laboratory for Mesoscopic Physics and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing, China
  6.Songshan Lake Materials Laboratory, Dongguan 523808 Guangdong, China
- Author bio：
  
  Xiulai Xu (xlxu@iphy.ac.cn)
- Funds：
- DOI：10.1038/s41377-020-0244-9
  CLC：
- Published：2020，
  
  Published Online：13 January 2020，
  
  Received：10 September 2019，
  
  Revised：12 December 2019，
  
  Accepted：05 January 2020
- Accepted：
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Yang, J. N. et al. Diabolical points in coupled active cavities with quantum emitters. Light: Science & Applications, 9, 52–59 (2020).
DOI：

Yang, J. N. et al. Diabolical points in coupled active cavities with quantum emitters. Light: Science & Applications, 9, 52–59 (2020). DOI： 10.1038/s41377-020-0244-9.

摘要

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.

关键词

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