Proposal for Direct Measurement of Topological Invariants in Optical Lattices
文献类型：期刊论文
| 作者 | Wang, L ; Soluyanov, AA ; Troyer, M |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 110期号:16 |
| ISSN号 | 0031-9007 |
| 通讯作者 | Wang, L (reprint author), ETH, CH-8093 Zurich, Switzerland. |
| 中文摘要 | We propose an experimental technique for classifying the topology of band structures realized in optical lattices, based on a generalization of topological charge pumping in quantum Hall systems to cold atoms in optical lattices. Time-of-flight measurement along one spatial direction combined with in situ detection along the transverse direction provides a direct measure of the system's Chern number, as we illustrate by calculations for the Hofstadter lattice. Based on an analogy with Wannier function techniques of topological band theory, the method is very general and also allows the measurement of other topological invariants, such as the Z(2) topological invariant of time-reversal symmetric insulators. DOI: 10.1103/PhysRevLett.110.166802 |
| 资助信息 | Swiss National Science Foundation through the NCCR QSIT; European Research Council |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57361]  |
| 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,Soluyanov, AA,Troyer, M. Proposal for Direct Measurement of Topological Invariants in Optical Lattices[J]. PHYSICAL REVIEW LETTERS,2013,110(16). |
| APA | Wang, L,Soluyanov, AA,&Troyer, M.(2013).Proposal for Direct Measurement of Topological Invariants in Optical Lattices.PHYSICAL REVIEW LETTERS,110(16). |
| MLA | Wang, L,et al."Proposal for Direct Measurement of Topological Invariants in Optical Lattices".PHYSICAL REVIEW LETTERS 110.16(2013). |
入库方式： OAI收割
来源：物理研究所
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