Dynamically tunable long-range coupling enabled by bound state in the continuum

Haijun Tang; Can Huang; Yuhan Wang; Xiong Jiang; Ruiheng Jin; Yue Cui; Shumin Xiao; Qinghai Song

doi:10.1038/s41377-025-01975-y

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Dynamically tunable long-range coupling enabled by bound state in the continuum

Original Articles

- Dynamically tunable long-range coupling enabled by bound state in the continuum
- Light: Science & Applications Vol. 14, Issue 10, Pages: 2991-2999(2025)
- Affiliations：
  
  1.Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, China
  2.Pengcheng Laboratory, Shenzhen, China
  3.National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, China
  4.Quantum Science Center of Guangdong-Hongkong Macao Greater Bay Area, Shenzhen, China
  5.Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor devices, Harbin Institute of Technology, Harbin, China
  6.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, China
- Author bio：
  
  Can Huang (huangcan@hit.edu.cn)
  Qinghai Song (qinghai.song@hit.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01975-y
  CLC：
- Received：05 February 2025，
  
  Revised：2025-06-07，
  
  Accepted：22 July 2025，
  
  Published Online：18 August 2025，
  
  Published：31 October 2025
- Accepted：
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Tang, H. J. et al. Dynamically tunable long-range coupling enabled by bound state in the continuum. Light: Science & Applications, 14, 2991-2999 (2025).
DOI：

Tang, H. J. et al. Dynamically tunable long-range coupling enabled by bound state in the continuum. Light: Science & Applications, 14, 2991-2999 (2025). DOI： 10.1038/s41377-025-01975-y.

摘要

Abstract

Formation and dynamic control of strong coupling among cavities are essential to realize advanced functional photonic and quantum circuits. Especially for cavities at distant distance or arbitrary locations. Conventional approaches suffer from short coupling distance

poor controllability

fixed locations and low wavelength uniformity

significantly restricting the scalability of photonic and quantum networks. Here

we exploit the intrinsic advantages of optical bound state in the continuum (BIC) and demonstrate an all-in-one solution for long-range coupled cavities. BIC metasurface can support a series of finite-sized quasi-BIC microlasers at arbitrary locations. The quasi-BICs microlasers have the same wavelength and are inherently connected through BIC metasurface. Consequently

the coupling distances in experiment increase significantly from subwavelength to tens of micrometers. Such long-range interaction in BIC metasurface enables scaling to two-dimensional architectures and ultrafast control of internal laser actions

e.g.

non-Hermitian zero-mode lasing. This research shall facilitate the advancement of scalable and reconfigurable photonic networks.

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references

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