Low-threshold topological nanolasers based on the second-order corner state

Weixuan Zhang; Xin Xie; Huiming Hao; Jianchen Dang; Shan Xiao; Shushu Shi; Haiqiao Ni; Zhichuan Niu; Can Wang; Kuijuan Jin; Xiangdong Zhang; Xiulai Xu

doi:10.1038/s41377-020-00352-1

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Low-threshold topological nanolasers based on the second-order corner state

Original Articles

- Low-threshold topological nanolasers based on the second-order corner state
- Light: Science & Applications Vol. 9, Issue 4, Pages: 1078-1083(2020)
- Affiliations：
  
  1.Key Laboratory of advanced optoelectronic quantum architecture and measurements of Ministry of Education, School of Physics, Beijing Institute of Technology, 100081 Beijing, China
  2.Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, Micro-nano Center, School of Physics, Beijing Institute of Technology, 100081 Beijing, China
  3.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  4.CAS Center for Excellence in Topological Quantum Computation and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  5.State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors Chinese Academy of Sciences, Beijing 100083, China
  6.Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Author bio：
  
  Zhichuan Niu (zcniu@semi.ac.cn)
  Xiangdong Zhang (zhangxd@bit.edu.cn)
  Xiulai Xu (xlxu@iphy.ac.cn)
- Funds：
- DOI：10.1038/s41377-020-00352-1
  CLC：
- Published：2020，
  
  Published Online：29 June 2020，
  
  Received：07 April 2020，
  
  Revised：10 June 2020，
  
  Accepted：12 June 2020
- Accepted：
Scan QR Code
Zhang, W. X. et al. Low-threshold topological nanolasers based on the second-order corner state. Light: Science & Applications, 9, 1078-1083 (2020).
DOI：

Zhang, W. X. et al. Low-threshold topological nanolasers based on the second-order corner state. Light: Science & Applications, 9, 1078-1083 (2020). DOI： 10.1038/s41377-020-00352-1.

摘要

Abstract

Topological lasers are immune to imperfections and disorder. They have been recently demonstrated based on many kinds of robust edge states

which are mostly at the microscale. The realization of 2D on-chip topological nanolasers with a small footprint

a low threshold and high energy efficiency has yet to be explored. Here

we report the first experimental demonstration of a topological nanolaser with high performance in a 2D photonic crystal slab. A topological nanocavity is formed utilizing the Wannier-type 0D corner state. Lasing behaviour with a low threshold of approximately 1 µW and a high spontaneous emission coupling factor of 0.25 is observed with quantum dots as the active material. Such performance is much better than that of topological edge lasers and comparable to that of conventional photonic crystal nanolasers. Our experimental demonstration of a low-threshold topological nanolaser will be of great significance to the development of topological nanophotonic circuitry for the manipulation of photons in classical and quantum regimes.

关键词

Keywords

references

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