Topological phases in ultracold polar-molecule quantum magnets

被引：96

作者：

Manmana, Salvatore R. ^{[1
,2
,3
,4
]}

Stoudenmire, E. M. ^{[5
]}

Hazzard, Kaden R. A. ^{[2
,3
,4
]}

Rey, Ana Maria ^{[2
,3
]}

Gorshkov, Alexey V. ^{[6
]}

机构：

[1] Univ Gottingen, Inst Theoret Phys, D-37077 Gottingen, Germany

[2] Univ Colorado, NIST, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[4] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

[5] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[6] CALTECH, Inst Quantum Informat & Matter, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 08期

基金：

美国国家科学基金会;

关键词：

MANY-BODY PHYSICS; LATTICE; INSULATORS; GASES; SUPERCONDUCTORS; DIAMOND; MODELS; ORDER;

D O I：

10.1103/PhysRevB.87.081106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show how to use polar molecules in an optical lattice to engineer quantum spin models with arbitrary spin S >= 1/2 and with interactions featuring a direction-dependent spin anisotropy. This is achieved by encoding the effective spin degrees of freedom in microwave-dressed rotational states of the molecules and by coupling the spins through dipolar interactions. We demonstrate how one of the experimentally most accessible anisotropies stabilizes symmetry protected topological phases in spin ladders. Using the numerically exact density matrix renormalization group method, we find that these interacting phases-previously studied only in the nearest-neighbor case-survive in the presence of long-range dipolar interactions. We also show how to use our approach to realize the bilinear-biquadratic spin-1 and the Kitaev honeycomb models. Experimental detection schemes and imperfections are discussed. DOI: 10.1103/PhysRevB.87.081106

引用

页数：6

共 92 条

[1] RIGOROUS RESULTS ON VALENCE-BOND GROUND-STATES IN ANTIFERROMAGNETS [J].

AFFLECK, I ;

KENNEDY, T ;

LIEB, EH ;

TASAKI, H .

PHYSICAL REVIEW LETTERS, 1987, 59 (07) :799-802

[2] Bose-Einstein Condensation of Erbium [J].

Aikawa, K. ;

Frisch, A. ;

Mark, M. ;

Baier, S. ;

Rietzler, A. ;

Grimm, R. ;

Ferlaino, F. .

PHYSICAL REVIEW LETTERS, 2012, 108 (21)

[3] Coherent Transfer of Photoassociated Molecules into the Rovibrational Ground State [J].

Aikawa, K. ;

Akamatsu, D. ;

Hayashi, M. ;

Oasa, K. ;

Kobayashi, J. ;

Naidon, P. ;

Kishimoto, T. ;

Ueda, M. ;

Inouye, S. .

PHYSICAL REVIEW LETTERS, 2010, 105 (20)

[4] Hyperfine energy levels of alkali-metal dimers: Ground-state polar molecules in electric and magnetic fields [J].

Aldegunde, J. ;

Rivington, Ben A. ;

Zuchowski, Piotr S. ;

Hutson, Jeremy M. .

PHYSICAL REVIEW A, 2008, 78 (03)

[5] New directions in the pursuit of Majorana fermions in solid state systems [J].

Alicea, Jason .

REPORTS ON PROGRESS IN PHYSICS, 2012, 75 (07)

[6]

[Anonymous], ARXIV08042509

[7] Collective phenomena in a quasi-two-dimensional system of fermionic polar molecules: Band renormalization and excitons [J].

Babadi, Mehrtash ;

Demler, Eugene .

PHYSICAL REVIEW A, 2011, 84 (03)

[8]

Balasubramanian G, 2009, NAT MATER, V8, P383, DOI [10.1038/nmat2420, 10.1038/NMAT2420]

[9] Theoretical progress in many-body physics with ultracold dipolar gases [J].

Baranov, M. A. .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2008, 464 (03) :71-111

[10] Condensed Matter Theory of Dipolar Quantum Gases [J].

Baranov, M. A. ;

Dalmonte, M. ;

Pupillo, G. ;

Zoller, P. .

CHEMICAL REVIEWS, 2012, 112 (09) :5012-5061

← 1 2 3 4 5 6 7 8 9 10 →