Highly Controllable and Robust 2D Spin-Orbit Coupling for Quantum Gases

被引：98

作者：

Sun, Wei ^{[1
,2
,3
]}

Wang, Bao-Zong ^{[1
,2
,3
,4
,5
]}

Xu, Xiao-Tian ^{[1
,2
,3
]}

Yi, Chang-Rui ^{[1
,2
,3
]}

Zhang, Long ^{[4
,5
]}

Wu, Zhan ^{[1
,2
,3
]}

Deng, Youjin ^{[1
,2
,3
]}

Liu, Xiong-Jun ^{[4
,5
]}

Chen, Shuai ^{[1
,2
,3
]}

Pan, Jian-Wei ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Shanghai Branch, Natl Res Ctr Phys Sci Microscale, Shanghai 201315, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Shanghai 201315, Peoples R China

[3] Univ Sci & Technol China, Chinese Acad Sci, Ctr Excellence Quantum Informat & Quantum Phys, Hefei 230326, Anhui, Peoples R China

[4] Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[5] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 15期

基金：

国家重点研发计划;

关键词：

Optical lattices - Bose-Einstein condensation - Topology;

D O I：

10.1103/PhysRevLett.121.150401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the realization of a robust and highly controllable two-dimensional (2D) spin-orbit (SO) coupling with a topological nontrivial band structure. By applying a retro-reflected 2D optical lattice, phase tunable Raman couplings are formed into the antisymmetric Raman lattice structure, and generate the 2D SO coupling with precise inversion and C-4 symmetries, leading to considerably enlarged topological regions. The lifetime of the 2D SO coupled Bose-Einstein condensate reaches several seconds, which enables exploring fine-tuning interaction effects. These essential advantages of the present new realization open the door to explore exotic quantum many-body effects and nonequilibrium dynamics with novel topology.

引用

页数：6

共 47 条

[1] GLOBAL ENERGY MINIMUM SEARCHES USING AN APPROXIMATE SOLUTION OF THE IMAGINARY TIME SCHRODINGER-EQUATION [J].