Realistic Time-Reversal Invariant Topological Insulators with Neutral Atoms

被引：274

作者：

Goldman, N. ^{[1
]}

Satija, I. ^{[2
]}

Nikolic, P. ^{[2
]}

Bermudez, A. ^{[3
]}

Martin-Delgado, M. A. ^{[3
]}

Lewenstein, M. ^{[4
,5
]}

Spielman, I. B. ^{[6
,7
]}

机构：

[1] Univ Libre Brussels, Ctr Nonlinear Phenomena & Complex Syst, B-1050 Brussels, Belgium

[2] George Mason Univ, Dept Phys, Fairfax, VA 22030 USA

[3] Univ Complutense, Dept Fis Teor 1, E-28040 Madrid, Spain

[4] ICFO Inst Ciencies Foton, E-08860 Barcelona, Spain

[5] ICREA Inst Catalana Recerca & Estudis Avancats, E-08010 Barcelona, Spain

[6] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[7] Univ Maryland, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 25期

关键词：

MAGNETIC-FIELDS;

D O I：

10.1103/PhysRevLett.105.255302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We lay out an experiment to realize time-reversal invariant topological insulators in alkali atomic gases. We introduce an original method to synthesize a gauge field in the near field of an atom chip, which effectively mimics the effects of spin-orbit coupling and produces quantum spin-Hall states. We also propose a feasible scheme to engineer sharp boundaries where the hallmark edge states are localized. Our multiband system has a large parameter space exhibiting a variety of quantum phase transitions between topological and normal insulating phases. Because of their remarkable versatility, cold-atom systems are ideally suited to realize topological states of matter and drive the development of topological quantum computing.

引用

页数：4

共 13 条

[1] EDGE MAGNETOPLASMONS IN THE TIME DOMAIN [J].

ASHOORI, RC ;

STORMER, HL ;

PFEIFFER, LN ;

BALDWIN, KW ;

WEST, K .

PHYSICAL REVIEW B, 1992, 45 (07) :3894-3897

[2] Quantum spin Hall effect and topological phase transition in HgTe quantum wells [J].

Bernevig, B. Andrei ;

Hughes, Taylor L. ;

Zhang, Shou-Cheng .

SCIENCE, 2006, 314 (5806) :1757-1761

[3]

DALIBARD J, ARXIV10085378V1

[4] ENERGY-LEVELS AND WAVE-FUNCTIONS OF BLOCH ELECTRONS IN RATIONAL AND IRRATIONAL MAGNETIC-FIELDS [J].

HOFSTADTER, DR .

PHYSICAL REVIEW B, 1976, 14 (06) :2239-2249

[5] Creation of effective magnetic fields in optical lattices: the Hofstadter butterfly for cold neutral atoms [J].

Jaksch, D ;

Zoller, P .

NEW JOURNAL OF PHYSICS, 2003, 5 :56.1-56.11

[6] Z2 topological order and the quantum spin Hall effect -: art. no. 146802 [J].

Kane, CL ;

Mele, EJ .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[7] Synthetic magnetic fields for ultracold neutral atoms [J].

Lin, Y. -J. ;

Compton, R. L. ;

Jimenez-Garcia, K. ;

Porto, J. V. ;

Spielman, I. B. .

NATURE, 2009, 462 (7273) :628-632

[8] Quantum anomalous Hall effect with cold atoms trapped in a square lattice [J].

Liu, Xiong-Jun ;

Liu, Xin ;

Wu, Congjun ;

Sinova, Jairo .

PHYSICAL REVIEW A, 2010, 81 (03)

[9] Topological states in two-dimensional optical lattices [J].

Stanescu, Tudor D. ;

Galitski, Victor ;

Das Sarma, S. .

PHYSICAL REVIEW A, 2010, 82 (01)

[10] Multilayer atom chips for versatile atom micromanipulation [J].

Trinker, M. ;

Groth, S. ;

Haslinger, S. ;

Manz, S. ;

Betz, T. ;

Schneider, S. ;

Bar-Joseph, I. ;

Schumm, T. ;

Schmiedmayer, J. .

APPLIED PHYSICS LETTERS, 2008, 92 (25)

← 1 2 →