Zhu Shi-Liang, Fu Hao, Wu C-J, Zhang S-C, Duan L-M
FOCUS Center and MCTP, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
Phys Rev Lett. 2006 Dec 15;97(24):240401. doi: 10.1103/PhysRevLett.97.240401. Epub 2006 Dec 12.
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.
我们提出了一种实验方案，用于在光诱导规范势中利用冷原子观测自旋霍尔效应。在适当的配置下，在空间变化激光场中运动的冷原子会经历一个有效的自旋相关规范势。通过数值模拟，我们证明了在实际条件下，这样的规范场会导致可观测的自旋霍尔电流。我们还讨论了光学晶格中的量子自旋霍尔态。
