Topological Charge Pumping in a One-Dimensional Optical Lattice

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	Topological Charge Pumping in a One-Dimensional Optical Lattice
	Wang, L ; Troyer, M ; Dai, X
刊名	PHYSICAL REVIEW LETTERS
	2013
卷号	111 期号:2
ISSN号	0031-9007
通讯作者	Wang, L (reprint author), ETH, CH-8093 Zurich, Switzerland.
中文摘要	A topological charge pump transfers charge in a quantized fashion. The quantization is stable against the detailed form of the pumping protocols and external noises and shares the same topological origin as the quantum Hall effect. We propose an experimental setup to realize topological charge pumping of cold fermionic atoms in a one-dimensional optical lattice. The quantization of the pumped charge is confirmed by first-principles simulations of the dynamics of uniform and trapped systems. Quantum effects are shown to be crucial for the topological protection of the charge quantization. Finite-temperature and nonadiabatic effects on the experimental observables are discussed. The realization of such a topological charge pump serves as a firm step toward exploring topological states and nonequilibrium dynamics using cold atoms.
资助信息	Swiss National Science Foundation through the NCCR QSIT; European Research Council; National Science Foundation of China
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57608]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, L,Troyer, M,Dai, X. Topological Charge Pumping in a One-Dimensional Optical Lattice[J]. PHYSICAL REVIEW LETTERS,2013,111(2).
APA	Wang, L,Troyer, M,&Dai, X.(2013).Topological Charge Pumping in a One-Dimensional Optical Lattice.PHYSICAL REVIEW LETTERS,111(2).
MLA	Wang, L,et al."Topological Charge Pumping in a One-Dimensional Optical Lattice".PHYSICAL REVIEW LETTERS 111.2(2013).