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一个以对称性保护的异常环在一个光子晶体中,具有负指数介质

Takuma Isobe¹, Tsuneya Yoshida², Yasuhiro Hatsugai³

¹Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan.

Nanophotonics (Berlin, Germany)

|December 5, 2024

概括

研究人员对光子晶体进行了数值分析,揭示了非赫米特拓带结构中的对称性保护异常环 (SPER). 这一发现表明,可以在特定频率的光子设备中实验观察SPER.

科学领域:

凝聚物质物理学凝聚物质物理学
光子学是指光子学的使用方法.
拓学材料拓学材料

背景情况:

非赫米特拓带结构,包括对称性保护的特殊环 (SPER),对于理解先进材料特性至关重要.
这些现象通常由涉及赫米特矩阵的通用自值问题 (GEVP) 描述.

研究的目的:

在光子晶体系统中对SPERs的出现进行数值研究.
分析由负指数介质,分环共振器和金属电线结构组成的光子晶体.

主要方法:

为了系统描述,利用了与赫米特矩阵的通用自值问题 (GEVP).
雇佣了COMSOL Multiphysics®用于对光子晶体进行数值分析.

主要成果:

在分析的光子晶体中证明了对称性保护的特殊环 (SPER) 的出现.
在一个包含负指数介质,分环共振器和金属电线结构的系统中观察到SPER.

结论:

数值分析证实了光子晶体中存在SPER的存在,这些光子晶体具有特定的结构组件.
预测的SPER以有限的频率出现,表明实验观测的潜力.

关键词:

一般化自身价值问题非赫尔密斯的拓学.拓上的光子学.

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