当前位置: X-MOL 学术Science › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Linked Weyl surfaces and Weyl arcs in photonic metamaterials
Science ( IF 56.9 ) Pub Date : 2021-07-30 , DOI: 10.1126/science.abi7803
Shaojie Ma 1, 2 , Yangang Bi 1, 2, 3 , Qinghua Guo 4 , Biao Yang 5 , Oubo You 1, 2 , Jing Feng 3 , Hong-Bo Sun 3, 6 , Shuang Zhang 1, 2, 7
Affiliation  

Generalization of the concept of band topology from lower-dimensional to higher-dimensional (n > 3) physical systems is expected to introduce new bulk and boundary topological effects. However, theoretically predicted topological singularities in five-dimensional systems—Weyl surfaces and Yang monopoles—have either not been demonstrated in realistic physical systems or are limited to purely synthetic dimensions. We constructed a system possessing Yang monopoles and Weyl surfaces based on metamaterials with engineered electromagnetic properties, leading to the observation of several intriguing bulk and surface phenomena, such as linking of Weyl surfaces and surface Weyl arcs, via selected three-dimensional subspaces. The demonstrated photonic Weyl surfaces and Weyl arcs leverage the concept of higher-dimension topology to control the propagation of electromagnetic waves in artificially engineered photonic media.



中文翻译:

光子超材料中的连接外尔表面和外尔弧

带拓扑概念从低维到高维的推广(n> 3) 物理系统有望引入新的体积和边界拓扑效应。然而,五维系统中理论预测的拓扑奇点——外尔面和杨单极子——要么没有在现实物理系统中得到证明,要么仅限于纯合成维度。我们基于具有工程电磁特性的超材料构建了一个具有杨单极子和外尔表面的系统,从而通过选定的三维子空间观察了几种有趣的体和表面现象,例如外尔表面和表面外尔弧的连接。演示的光子外尔表面和外尔弧利用高维拓扑的概念来控制电磁波在人工设计的光子介质中的传播。

更新日期:2021-07-30
down
wechat
bug