A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT
文献类型：期刊论文
| 作者 | Sun, CP
|
| 刊名 | INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
 |
| 出版日期 | 2013 |
| 卷号 | 11期号:5页码:1350049 |
| 关键词 | PHASE-TRANSITION ULTRACOLD ATOMS EINSTEIN SUPERFLUID INSULATOR |
| ISSN号 | 0219-7499 |
| 通讯作者 | Huo, MX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. |
| 英文摘要 | In this paper, we propose to directly detect Mott lobes, i.e. the order parameter hai, describing the Mott insulator (MI) to superfiuid (SF) quantum phase transition of the Bose-Hubbard (BH) model. By weakly coupling the system to an environment in the SF phase, the U(1) symmetry breaking of the system is simulated, and the order parameter can be read from the AC Josephson current between the system and the environment. The relation between the order parameter and the Josephson current is obtained from both the mean-field theory approach and an exact numerical simulation of a finite-size example. Our numerical simulations show that the pro file of the order parameter read from the Josephson current is di r erent from it predicted by the mean field theory, but similar to it in a system whose U(1) symmetry is broken by a weak field proportional to a +a. This proposal is feasible in optical lattices. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program (973 Program) of China [2012CB921900]; CNSF [11374163] |
| 原文出处 | http://dx.doi.org/10.1142/S0219749913500494 |
| 语种 | 英语 |
| WOS记录号 | WOS:000327313300005 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15300]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Sun, CP. A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT[J]. INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,2013,11(5):1350049. |
| APA | Sun, CP.(2013).A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT.INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,11(5),1350049. |
| MLA | Sun, CP."A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT".INTERNATIONAL JOURNAL OF QUANTUM INFORMATION 11.5(2013):1350049. |
入库方式： OAI收割
来源：理论物理研究所
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