Dynamic optical superlattices with topological bands

被引：39
作者：
Baur, Stefan K. [1 ]
Schleier-Smith, Monika H. [2 ,3 ,4 ]
Cooper, Nigel R. [1 ,3 ]
机构：
[1] Univ Cambridge, Cavendish Lab, TCM Grp, Cambridge CB3 0HE, England
[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[3] Univ Munich, Fak Phys, D-80799 Munich, Germany
[4] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
ARTIFICIAL MAGNETIC-FIELDS; COLD ATOMS; LATTICES; STATES;
D O I：
10.1103/PhysRevA.89.051605
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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页数：5
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