Quantum Simulation for Three-Dimensional Chiral Topological Insulator

Ji, Wentao1,2,3,6; Zhang, Lin4,5; Wang, Mengqi1,2,3,6; Zhang, Long4,5; Guo, Yuhang1,2,3,6; Chai, Zihua1,2,3,6; Rong, Xing1,2,3,6; Shi, Fazhan1,2,3,6; Liu, Xiong-Jun4,5,7,8,9; Wang, Ya1,2,3,6; Du, Jiangfeng1,2,3,6

2020-07-10

10.1103/PhysRevLett.125.020504

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

Quantum simulation, as a state-of-the-art technique, provides a powerful way to explore topological quantum phases beyond natural limits. Nevertheless, it is usually hard to simulate both the bulk and surface topological physics at the same time to reveal their correspondence. Here we build up a quantum simulator using nitrogen-vacancy center to investigate a three-dimensional (3D) chiral topological insulator, and demonstrate the study of both the bulk and surface topological physics by quantum quenches. First, a dynamical bulk-surface correspondence in momentum space is observed, showing that the bulk topology of the 3D phase uniquely corresponds to the nontrivial quench dynamics emerging on 2D momentum hypersurfaces called band inversion surfaces (BISs). This is the momentum-space counterpart of the bulkboundary correspondence in real space. Further, the symmetry protection of the 3D chiral phase is uncovered by measuring dynamical spin textures on BISs, which exhibit perfect (broken) topology when the chiral symmetry is preserved (broken). Finally, we measure the topological charges to characterize directly the bulk topology and identify an emergent dynamical topological transition when varying the quenches from deep to shallow regimes. This work demonstrates how a full study of topological phases can be achieved in quantum simulators.

SCI ; EI

英语

通讯

National Key R&D Program of China[2018YFA0306600][2017YFA0305000][2016YFA0301604] ; NNSFC[11775209][11825401][81788101][11761161003][11921005][11761131011][11722544] ; CAS[GJJSTD20170001][QYZDY-SSW-SLH004] ; Anhui Initiative in Quantum Information Technologies[AHY050000] ; Strategic Priority Research Program of CAS[XDB28000000]

Physics

Physics, Multidisciplinary

WOS:000547338400003

AMER PHYSICAL SOC

20203008963006

Electric insulators ; Quantum chemistry ; Textures ; Momentum ; Quantum theory ; Topological insulators

Physical Chemistry:801.4 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Mechanics:931.1 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, CAS Key Lab Microscale Magnet Resonance, Hefei 230026, Peoples R China
4.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
5.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
6.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China
7.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
8.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
9.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China

Ji, Wentao,Zhang, Lin,Wang, Mengqi,et al. Quantum Simulation for Three-Dimensional Chiral Topological Insulator[J]. PHYSICAL REVIEW LETTERS,2020,125(2).

Ji, Wentao.,Zhang, Lin.,Wang, Mengqi.,Zhang, Long.,Guo, Yuhang.,...&Du, Jiangfeng.(2020).Quantum Simulation for Three-Dimensional Chiral Topological Insulator.PHYSICAL REVIEW LETTERS,125(2).

Ji, Wentao,et al."Quantum Simulation for Three-Dimensional Chiral Topological Insulator".PHYSICAL REVIEW LETTERS 125.2(2020).