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Huo, MX; Li, Y; Song, Z; Sun, CP; Huo, MX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT
发表期刊INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
语种英语
关键词Phase-transition Ultracold Atoms Einstein Superfluid Insulator
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.
2013
ISSN0219-7499
卷号11期号:5页码:1350049
学科领域Physics
收录类别SCI
项目资助者National Basic Research Program (973 Program) of China [2012CB921900]; CNSF [11374163] ; National Basic Research Program (973 Program) of China [2012CB921900]; CNSF [11374163] ; National Basic Research Program (973 Program) of China [2012CB921900]; CNSF [11374163] ; National Basic Research Program (973 Program) of China [2012CB921900]; CNSF [11374163]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15300
专题理论物理所科研产出_SCI论文
通讯作者Huo, MX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
推荐引用方式
GB/T 7714
Huo, MX,Li, Y,Song, Z,et al. A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT[J]. INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,2013,11(5):1350049.
APA Huo, MX,Li, Y,Song, Z,Sun, CP,&Huo, MX .(2013).A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT.INTERNATIONAL JOURNAL OF QUANTUM INFORMATION,11(5),1350049.
MLA Huo, MX,et al."A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT".INTERNATIONAL JOURNAL OF QUANTUM INFORMATION 11.5(2013):1350049.
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