Analogs of quantum-Hall-effect edge states in photonic crystals
Analogs of quantum-Hall-effect edge states in photonic crystals
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DOI：
10.1103/physreva.78.033834
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发表时间：
2008-09-01
影响因子：
2.9
通讯作者：
Haldane, F. D. M.
中科院分区：
文献类型：
--
作者：
Raghu, S.;Haldane, F. D. M.
利用时间反转-破缺法拉第效应介质构建的光子晶体可以表现出手征边缘模式，该手征边缘模式沿着沿着边界单向传播，法拉第轴在该边界上反转。这些模式是量子霍尔效应（QHE）系统的电子边缘状态的精确模拟，并且也不受反向散射和无序定位的影响。的Berry曲率的光子带中起着类似的作用，在QHE的磁场。明确的计算表明存在这样的单向传播的光子边缘态。
Photonic crystals built with time-reversal-symmetry-breaking Faraday-effect media can exhibit chiral edge modes that propagate unidirectionally along boundaries across which the Faraday axis reverses. These modes are precise analogs of the electronic edge states of quantum-Hall-effect (QHE) systems, and are also immune to backscattering and localization by disorder. The Berry curvature of the photonic bands plays a role analogous to that of the magnetic field in the QHE. Explicit calculations demonstrating the existence of such unidirectionally propagating photonic edge states are presented.