文章基本信息

标题：Multi-class, multi-functional design of photonic topological insulators by rational symmetry-indicators engineering
本地全文：下载
作者：Luo Jiachen ; Luo Jiachen ; Du Zongliang 等
期刊名称：Nanophotonics
印刷版ISSN：2192-8606
电子版ISSN：2192-8614
出版年度：2021
卷号：10
期号：18
页码：4523-4531
DOI：10.1515/nanoph-2021-0433
语种：English
出版社：Walter de Gruyter GmbH
摘要：An explicit topology optimization-based design paradigm is proposed for the design of photonic topological crystalline insulators (TCIs). To strictly guarantee the topological property, rational engineering of symmetry-indicators is carried out by mathematical programming, which simultaneously maximizes the width of nontrivial topological band gaps and achieves the desired quantized bulk polarization. Our approach is successfully applied to design photonic TCIs with time-reversal symmetry in two-dimensional point groups, higher-order magnetic TCIs, and higher-order photonic TCIs. This methodology paves the way for inverse design of optimized photonic/phononic, multiphysics, and multifunctional three-dimensional TCIs.