Dynamic optical superlattices with topological bands
Dynamic optical superlattices with topological bands
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DOI：
10.1103/physreva.89.051605
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发表时间：
2014-05-30
影响因子：
2.9
通讯作者：
Cooper, Nigel R.
中科院分区：
文献类型：
--
作者：
Baur, Stefan K.;Schleier-Smith, Monika H.;Cooper, Nigel R.
介绍了一种通过设计具有时间周期性的光学超晶格来为中性原子或分子产生高通量合成磁场的全光学方法。调制为产生两个频率的单个激光源足以产生具有拓扑Floquet能带的动态干涉图案。我们提出了一个简单的激光装置，实现了一个紧束缚模型与均匀的流量和良好分离的陈带。我们的方法只依赖于粒子的标量极化率和远失谐光。
We introduce an all-optical approach to producing high-flux synthetic magnetic fields for neutral atoms or molecules by designing intrinsically time-periodic optical superlattices. A single laser source, modulated to generate two frequencies, suffices to create dynamic interference patterns which have topological Floquet energy bands. We propose a simple laser setup that realizes a tight-binding model with uniform flux and well-separated Chern bands. Our method relies only on the particles' scalar polarizability and far-detuned light.