Phys. Rev. Lett. 97, 240401 (2006) [4 pages]

Spin Hall Effects for Cold Atoms in a Light-Induced Gauge Potential

Abstract

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Shi-Liang Zhu^1,2, Hao Fu¹, C.-J. Wu³, S.-C. Zhang⁴, and L.-M. Duan¹
¹FOCUS Center and MCTP, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
²Institute for Condensed Matter Physics and SPTE, South China Normal University, Guangzhou, China
³Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA
⁴Department of Physics, Stanford University, Stanford, California 94305-4045, USA

Received 10 July 2006; published 12 December 2006

We propose an experimental scheme to observe spin Hall effects with cold atoms in a light-induced gauge potential. Under an appropriate configuration, the cold atoms moving in a spatially varying laser field experience an effective spin-dependent gauge potential. Through numerical simulation, we demonstrate that such a gauge field leads to observable spin Hall currents under realistic conditions. We also discuss the quantum spin Hall state in an optical lattice.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.97.240401

DOI:

10.1103/PhysRevLett.97.240401

PACS:

05.30.Fk, 03.65.Vf, 72.25.−b, 73.43.−f

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Phys. Rev. Lett. 97, 240401 (2006) [4 pages]

Spin Hall Effects for Cold Atoms in a Light-Induced Gauge Potential