Long-range-interacting topological photonic lattices breaking channel-bandwidth limit

扫码查看

原文链接

国家科技期刊平台
NETL
NSTL
万方数据

外文摘要：The presence of long-range interactions is crucial in distinguishing between abstract complex networks and wave systems.In photonics,because electromagnetic interactions between optical elements generally decay rapidly with spatial distance,most wave phenomena are modeled with neighboring interactions,which account for only a small part of conceptually possible networks.Here,we explore the impact of substantial long-range interactions in topological photonics.We demonstrate that a crystalline structure,characterized by long-range interactions in the absence of neighboring ones,can be interpreted as an overlapped lattice.This overlap model facilitates the realization of higher values of topological invariants while maintaining bandgap width in photonic topological insulators.This breaking of topology-bandgap tradeoff enables topologically protected multichannel signal processing with broad bandwidths.Under practically accessible system parameters,the result paves the way to the extension of topological physics to network science.

作者：

Gyunghun Kim、Joseph Suh、Dayeong Lee、Namkyoo Park、Sunkyu Yu

展开 >

作者单位：

Department of Electrical and Computer Engineering,Intelligent Wave Systems Laboratory,Seoul National University,Seoul 08826,Korea

Department of Electrical and Computer Engineering,Photonic Systems Laboratory,Seoul National University,Seoul 08826,Korea

基金：

National Research Foundation of Korea(NRF)through the Basic Research LaboratoryYoung Researcher ProgramMidcareer Researcher ProgramKorean governmentCreative-Pioneering Researchers ProgramBK21 FOUR program of the Education and Research Program for Future ICT Pioneers in 2023,through Seoul National UniversitySOFT foundry institute

项目编号：

RS-2024-003976642021R1C1C1005031RS-2023-00274348

出版年：

2024

DOI：

10.1038/s41377-024-01557-4

光:科学与应用(英文版)

中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD

ISSN：2095-5545

年,卷(期)：2024.13(10)