论文标题
在三维原子晶体中光定位
Localization of light in a three-dimensional disordered crystal of atoms
论文作者
论文摘要
我们证明，原子位置的弱疾病会在固定的三维固定的固定的固定的光学合奏中引入空间定位的光学模式，该集合在钻石晶格中排列并由电磁场耦合。局部模式的频率集中在未扰动的晶格的带边缘附近。对无电导的百分位数的有限尺寸缩放分析显示了两个移动性边缘，并为定位长度的关键指数估计$ν= 0.8 $ -1.1。当该疾病变得过于强，并且系统开始类似于延长所有模式时，局部模式就会消失。
We demonstrate that a weak disorder in atomic positions introduces spatially localized optical modes in a dense three-dimensional ensemble of immobile two-level atoms arranged in a diamond lattice and coupled by the electromagnetic field. The frequencies of the localized modes concentrate near band edges of the unperturbed lattice. Finite-size scaling analysis of the percentiles of Thouless conductance reveals two mobility edges and yields an estimation $ν= 0.8$--1.1 for the critical exponent of the localization length. The localized modes disappear when the disorder becomes too strong and the system starts to resemble a fully disordered one where all modes are extended.
