Topological modes in one-dimensional solids and photonic crystals
Topological modes in one-dimensional solids and photonic crystals
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DOI：
10.1103/physrevb.93.125106
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发表时间：
2016-03-02
影响因子：
3.7
通讯作者：
Mathur, Harsh
中科院分区：
文献类型：
--
作者：
Atherton, Timothy J.;Butler, Celia A. M.;Mathur, Harsh
理论上表明，具有时间反演和粒子-空穴对称性的一维晶体的特征在于拓扑不变量，该拓扑不变量预测边缘状态的存在或其他。这是通过在微波政权的光子晶体模拟的建设和模拟实验证实。结果表明，边缘模式耦合到外部模式的光子晶体通过法诺共振。
It is shown theoretically that a one-dimensional crystal with time-reversal and particle-hole symmetries is characterized by a topological invariant that predicts the existence or otherwise of edge states. This is confirmed experimentally through the construction and simulation of a photonic crystal analog in the microwave regime. It is shown that the edge mode couples to modes external to the photonic crystal via a Fano resonance.