Experimental Observation of Momentum-Space Chiral Edge Currents in Room-Temperature Atoms

被引：75

作者：

Cai, Han ^{[1
,2
]}

Liu, Jinhong ^{[1
,2
,3
]}

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

He, Yanyan ^{[1
,2
]}

Zhu, Shi-Yao ^{[1
,2
,4
]}

Zhang, Jun-Xiang ^{[1
,2
]}

Wang, Da-Wei ^{[1
,2
,5
]}

机构：

[1] Zhejiang Univ, Dept Phys, Interdisciplanery Ctr Quantum Informat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

[3] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Shanxi, Peoples R China

[4] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

[5] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 122卷 / 02期

基金：

中国国家自然科学基金;

关键词：

REALIZATION; STATES; TRANSITIONS; MODEL;

D O I：

10.1103/PhysRevLett.122.023601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Chiral edge currents play an important role in characterizing topological matter. In atoms, they have been observed at such a low temperature that the atomic motion can be measured. Here we report the first experimental observation of chiral edge currents in atoms at room temperature. Staggered magnetic fluxes are induced by the spatial phase difference between two standing-wave light fields, which couple atoms to form a momentum-space zigzag superradiance lattice. The chiral edge currents are measured by comparing the directional superradiant emissions of two timed Dicke states in the lattice. Our results pave the way for simulating topological physics in hot atoms.

引用

页数：6

共 44 条

[1] Correlated Dynamics in a Synthetic Lattice of Momentum States [J].