Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation

Chaobiao Zhou; Rong Jin; Haoxuan He; Jing Huang; Guanhai Li; Lujun Huang

doi:10.1038/s41377-025-02164-7

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Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation

Original Articles

- Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation
- Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation
- Light: Science & Applications 2026年15卷第3期页码：916-925
- Affiliations：
  
  1.School of Physics and Mechatronic Engineering, Guizhou Minzu University, Guiyang 550025, China
  2.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
  3.Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
  4.Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
  5.State Key Laboratory of Precision Spectroscopy, School of Physics, East China Normal University, Shanghai 200241, China
- Author bio：
  
  Chaobiao Zhou (cbzhou@gzmu.edu.cn)
  Guanhai Li (ghli0120@mail.sitp.ac.cn)
  Lujun Huang (ljhuang@phy.ecnu.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-02164-7
  中图分类号：
- 收稿：2025-05-09，
  
  修回：2025-11-26，
  
  录用：2025-12-07，
  
  网络首发：2026-01-23，
  
  纸质出版：2026-03-31
- Accepted：
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Chaobiao Zhou, Rong Jin, Haoxuan He, 等. Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation[J]. Light: Science & Applications, 2026,15(3):916-925.

Zhou, C. B. et al. Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation. Light: Science & Applications, 15, 916-925 (2026).
Chaobiao Zhou, Rong Jin, Haoxuan He, 等. Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation[J]. Light: Science & Applications, 2026,15(3):916-925. DOI： 10.1038/s41377-025-02164-7.

Zhou, C. B. et al. Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation. Light: Science & Applications, 15, 916-925 (2026). DOI： 10.1038/s41377-025-02164-7.

摘要

Abstract

Ultrahigh-Q optical resonances are the cornerstone of next-generation nanophotonic technologies

but their simultaneous realization of robustness and on-chip practicality remains a significant challenge. In this work

we present tetramer composite metasurfaces capable of supporting two distinct classes of ultrahigh-Q resonances: centroid symmetry-protected bound states in the continuum (SP-BICs) and area-conserved guided-mode resonances (GMRs). By employing a four-hole supercell design

we demonstrate that centering each hole within its subcell preserves C

symmetry

thereby enabling SP-BICs. Controlled lateral displacement transforms them into quasi-BICs with Q

. Independently

enforcing diagonal-hole area conservation within the super unit cell generates degenerate GMRs with Q

which exhibit remarkable stability across a broad wave vector range. Breaking this area conservation splits the GMRs into paired ultrahigh-Q resonances

while adjusting the center-to-center distance of air holes lifts their degeneracy. Experimentally

we validate both resonance types using silicon photonic crystal slabs

achieving measured Q-factors exceeding 10

000

with a maximum value of 43

700. Such ultrahigh-Q composite-metasurfaces provide a versatile platform of enhancing light-matter interactions.

关键词

Keywords

references

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