Local-nonlocal assisted multifunctional photonic crystals

Wenjing Lv; Haoye Qin; Xiaodong Shi; Fulong Shi; Xinyang Mu; Zhou Zhou; Jiazheng Qin; Bo Li; Cheng-Wei Qiu; Qinghua Song

doi:10.1038/s41377-026-02308-3

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Local-nonlocal assisted multifunctional photonic crystals

Original Articles

- Local-nonlocal assisted multifunctional photonic crystals
- Light: Science & Applications Vol. 15, Issue 8, Pages: 2694-2701(2026)
- Affiliations：
  
  1.Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
  2.Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
  3.A*STAR Quantum Innovation Centre (Q.InC), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Author bio：
  
  Cheng-Wei Qiu (chengwei.qiu@nus.edu.sg)
  Qinghua Song (song.qinghua@sz.tsinghua.edu.cn)
- Funds：
- DOI：10.1038/s41377-026-02308-3
  CLC：
- Received：14 October 2025，
  
  Revised：2026-04-02，
  
  Accepted：10 April 2026，
  
  Online First：19 May 2026，
  
  Published：31 August 2026
- Accepted：
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Lv, W. J. et al. Local-nonlocal assisted multifunctional photonic crystals. Light: Science & Applications, 15, 2694-2701 (2026).
DOI：

Lv, W. J. et al. Local-nonlocal assisted multifunctional photonic crystals. Light: Science & Applications, 15, 2694-2701 (2026). DOI： 10.1038/s41377-026-02308-3.

摘要

Abstract

Metasurfaces excel at local

spatially varying control of wavefronts

whereas photonic crystals (PhCs) are admired for their nonlocal resonances such as bound states in the continuum (BICs). These two regimes—local control and nonlocal collective response—have long been viewed as difficult to integrate within a single platform. Here

we introduce local-nonlocal assisted multifunctional PhCs unifying wavefront shaping and BICs by embedding meta-notches within PhC pillars. The locally tunable notches generate spectral-zero-assisted topological phase for efficient 2π coverage

while the strongly confined BIC modes remain largely unperturbed

preserving high-

nonlocal resonances. This constructive local-nonlocal integration synthesizes the design freedom of metasurfaces with the dispersive resonance of PhCs in a single planar device. Our approach extends the capabilities of flat optics

enabling multifunctional PhCs and opening pathways toward higher-order topologies

advanced imaging

communication

and analogue optical computing.

关键词

Keywords

references

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