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A QUANTUM SIMULATOR FOR PROBING MOTT LOBES VIA THE AC JOSEPHSON EFFECT
Huo, MX; Li, Y; Song, Z; Sun, CP; Huo, MX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
2013
发表期刊INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
ISSN0219-7499
卷号11期号:5页码:1350049
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.
部门归属[Huo, Ming-Xia; Li, Ying; Song, Zhi; Sun, Chang-Pu] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China; [Sun, Chang-Pu] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Phase-transition Ultracold Atoms Einstein Superfluid Insulator
学科领域Physics
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] ; 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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收录类别SCI
语种英语
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] ; 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]
WOS记录号WOS:000327313300005
引用统计
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SCI论文
通讯作者Huo, MX (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
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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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