Realistic Time-Reversal Invariant Topological Insulators with Neutral Atoms

被引：270

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
ASHOORI, RC
STORMER, HL
PFEIFFER, LN
BALDWIN, KW
WEST, K
[J]. PHYSICAL REVIEW B, 1992, 45 (07): : 3894 - 3897
[2] Quantum spin Hall effect and topological phase transition in HgTe quantum wells
Bernevig, B. Andrei
Hughes, Taylor L.
Zhang, Shou-Cheng
[J]. 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
HOFSTADTER, DR
[J]. PHYSICAL REVIEW B, 1976, 14 (06): : 2239 - 2249
[5] Creation of effective magnetic fields in optical lattices: the Hofstadter butterfly for cold neutral atoms
Jaksch, D
Zoller, P
[J]. NEW JOURNAL OF PHYSICS, 2003, 5 : 56.1 - 56.11
[6] Z2 topological order and the quantum spin Hall effect -: art. no. 146802
Kane, CL
Mele, EJ
[J]. PHYSICAL REVIEW LETTERS, 2005, 95 (14)
[7] Synthetic magnetic fields for ultracold neutral atoms
Lin, Y. -J.
Compton, R. L.
Jimenez-Garcia, K.
Porto, J. V.
Spielman, I. B.
[J]. NATURE, 2009, 462 (7273) : 628 - 632
[8] Quantum anomalous Hall effect with cold atoms trapped in a square lattice
Liu, Xiong-Jun
Liu, Xin
Wu, Congjun
Sinova, Jairo
[J]. PHYSICAL REVIEW A, 2010, 81 (03):
[9] Topological states in two-dimensional optical lattices
Stanescu, Tudor D.
Galitski, Victor
Das Sarma, S.
[J]. PHYSICAL REVIEW A, 2010, 82 (01):
[10] Multilayer atom chips for versatile atom micromanipulation
Trinker, M.
Groth, S.
Haslinger, S.
Manz, S.
Betz, T.
Schneider, S.
Bar-Joseph, I.
Schumm, T.
Schmiedmayer, J.
[J]. APPLIED PHYSICS LETTERS, 2008, 92 (25)

← 1 2 →