Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms

被引：607

作者：

Gorshkov, A. V. ^{[1
]}

Hermele, M. ^{[2
]}

Gurarie, V. ^{[2
]}

Xu, C. ^{[1
]}

Julienne, P. S. ^{[3
,4
]}

Ye, J. ^{[2
,5
]}

Zoller, P. ^{[6
,7
]}

Demler, E. ^{[1
,8
]}

Lukin, M. D. ^{[1
,8
]}

Rey, A. M. ^{[2
,5
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

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

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

[4] Univ Maryland, Gaithersburg, MD 20899 USA

[5] NIST, JILA, Boulder, CO 80309 USA

[6] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[7] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria

[8] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom Mol & Opt Phys, Cambridge, MA 02138 USA

来源：

NATURE PHYSICS | 2010年 / 6卷 / 04期

基金：

美国国家科学基金会;

关键词：

EXCHANGE INTERACTION; KONDO-LATTICE; SPIN; SUPEREXCHANGE;

D O I：

10.1038/NPHYS1535

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fermionic alkaline-earth atoms have unique properties that make them attractive candidates for the realization of atomic clocks and degenerate quantum gases. At the same time, they are attracting considerable theoretical attention in the context of quantum information processing. Here we demonstrate that when such atoms are loaded in optical lattices, they can be used as quantum simulators of unique many-body phenomena. In particular, we show that the decoupling of the nuclear spin from the electronic angular momentum can be used to implement many-body systems with an unprecedented degree of symmetry, characterized by the SU(N) group with N as large as 10. Moreover, the interplay of the nuclear spin with the electronic degree of freedom provided by a stable optically excited state should enable the study of physics governed by the spin-orbital interaction. Such systems may provide valuable insights into the physics of strongly correlated transition-metal oxides, heavy-fermion materials and spin-liquid phases.

引用

页码：289 / 295

页数：7

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