Tuning Anomalous Floquet Topological Bands with Ultracold Atoms

Zhang, Jin-Yi1,2,3,4,5; Yi, Chang-Rui1,2,3,4,5; Zhang, Long6,7,10,11; Jiao, Rui-Heng1,2,3,4,5; Shi, Kai-Ye8; Yuan, Huan1,2,3,4,5; Zhang, Wei8; Liu, Xiong-Jun6,7,9; Chen, Shuai1,2,3,4,5; Pan, Jian-Wei1,2,3,4,5

2023-01-27

10.1103/PhysRevLett.130.043201

PHYSICAL REVIEW LETTERS   Impact Factor & Quartile

0031-9007

1079-7114

The Floquet engineering opens the way to create new topological states without counterparts in static systems. Here, we report the experimental realization and characterization of new anomalous topological states with high-precision Floquet engineering for ultracold atoms trapped in a shaking optical Raman lattice. The Floquet band topology is manipulated by tuning the driving-induced band crossings referred to as band inversion surfaces (BISs), whose configurations fully characterize the topology of the underlying states. We uncover various exotic anomalous topological states by measuring the configurations of BISs that correspond to the bulk Floquet topology. In particular, we identify an unprecedented anomalous Floquet valley-Hall state that possesses anomalous helical-like edge modes protected by valleys and a chiral state with high Chern number.

SCI

English

NI Journal Papers

Others

Innovation Program for Quantum Science and Technology[2021ZD0302000] ; National Key Research and Development Program of China["2021YFA1400900","2018YFA0306501"] ; National Natural Science Foundation of China["11921005","12025406","11825401","12074428","12104445"] ; Anhui Initiative in Quantum Information Technologies[AHY120000] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01] ; Strategic Priority Research Program of Chinese Academy of Science[XDB28000000] ; startup grant of University of Science and Technology of China[KY2340000152] ; Shanghai Pujiang Program[21PJ1413600] ; startup grant of Huazhong University of Science and Technology[3004012191] ; Beijing Natural Science Foundation[Z180013] ; Open Project of Shenzhen Institute of Quantum Science and Engineering[SIQSE202003]

Physics

Physics, Multidisciplinary

WOS:000925756600003

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China
4.Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phys, Shanghai 201315, Peoples R China
5.Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China
6.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
7.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
8.Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
9.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
10.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
11.Huazhong Univ Sci & Technol, Inst Quantum Sci & Engn, Wuhan 430074, Peoples R China

Zhang, Jin-Yi,Yi, Chang-Rui,Zhang, Long,et al. Tuning Anomalous Floquet Topological Bands with Ultracold Atoms[J]. PHYSICAL REVIEW LETTERS,2023,130(4).

Zhang, Jin-Yi.,Yi, Chang-Rui.,Zhang, Long.,Jiao, Rui-Heng.,Shi, Kai-Ye.,...&Pan, Jian-Wei.(2023).Tuning Anomalous Floquet Topological Bands with Ultracold Atoms.PHYSICAL REVIEW LETTERS,130(4).

Zhang, Jin-Yi,et al."Tuning Anomalous Floquet Topological Bands with Ultracold Atoms".PHYSICAL REVIEW LETTERS 130.4(2023).