Direct observation of Anderson localization of ultracold atoms in a quasiperiodic lattice

被引：1
|
作者：
Yan, Wenbo [1 ,2 ]
Li, Yuqing [1 ,2 ]
Zhao, Hongxing [1 ,2 ]
Wu, Jizhou [1 ,2 ]
Liu, Wenliang [1 ,2 ]
Li, Peng [3 ]
Fu, Yongming [3 ]
Xiao, Liantuan [1 ,2 ]
Ma, Jie [1 ,2 ]
Jia, Suotang [1 ,2 ]
机构：
[1] Shanxi Univ, Inst Laser Spect, Coll Phys & Elect Engn, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
[3] Shanxi Univ, Coll Phys & Elect Engn, Taiyuan 030006, Peoples R China
来源：
OPTICS CONTINUUM | 2023年 / 2卷 / 10期
基金：
中国国家自然科学基金;
关键词：
DIFFUSION; ABSENCE;
D O I：
10.1364/OPTCON.499768
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultracold atoms in quasiperiodic lattices offer a versatile platform for studying many intriguingly disorder-driven phenomena. Here we study the quantum transport of noninteracting ultracold 133Cs atoms in a one-dimensional quasiperiodic momentum lattice, which is formed by using the laser-coupled momentum states as synthetic dimensions. Through measurements of the site-resolved density distribution of atoms in the synthetic quasiperiodic lattice, we directly observe the transition from the atomic diffusive transport to Anderson localization in the initial injection site with increasing strength of the quasiperiodic modulation. We show the dependence of momentum width characterizing the atomic expansion degree on the quasiperiodic modulation strength, and our observation is in good agreement with the theoretical calculation. Our work provides significant insights for understanding the quantum spreading in disordered systems.
引用
收藏
页码：2116 / 2121
页数：6
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