Exact Quantum Dynamics of a Bosonic Josephson Junction

被引：151

作者：

Sakmann, Kaspar ^{[1
]}

Streltsov, Alexej I. ^{[1
]}

Alon, Ofir E. ^{[1
]}

Cederbaum, Lorenz S. ^{[1
]}

机构：

[1] Univ Heidelberg, Inst Phys Chem, D-69120 Heidelberg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 22期

关键词：

BOSE-EINSTEIN CONDENSATE; DOUBLE-WELL; GASES;

D O I：

10.1103/PhysRevLett.103.220601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The quantum dynamics of a one-dimensional bosonic Josephson junction is studied by solving the time-dependent many-boson Schroumldinger equation numerically exactly. Already for weak interparticle interactions and on short time scales, the commonly employed mean-field and many-body methods are found to deviate substantially from the exact dynamics. The system exhibits rich many-body dynamics such as enhanced tunneling and a novel equilibration phenomenon of the junction depending on the interaction, which is attributed to a quick loss of coherence.

引用

页数：4

共 25 条

[1] Direct observation of tunneling and nonlinear self-trapping in a single bosonic Josephson junction -: art. no. 010402 [J].

Albiez, M ;

Gati, R ;

Fölling, J ;

Hunsmann, S ;

Cristiani, M ;

Oberthaler, MK .

PHYSICAL REVIEW LETTERS, 2005, 95 (01)

[2] Multiconfigurational time-dependent Hartree method for bosons: Many-body dynamics of bosonic systems [J].

Alon, Ofir E. ;

Streltsov, Alexej I. ;

Cederbaum, Lorenz S. .

PHYSICAL REVIEW A, 2008, 77 (03)

[3] Gross-Pitaevskii equation for Bose particles in a double-well potential: Two-mode models and beyond [J].

Ananikian, D ;

Bergeman, T .

PHYSICAL REVIEW A, 2006, 73 (01)

[4] Observation of interference between two Bose condensates [J].

Andrews, MR ;

Townsend, CG ;

Miesner, HJ ;

Durfee, DS ;

Kurn, DM ;

Ketterle, W .

SCIENCE, 1997, 275 (5300) :637-641

[5] Squeezing and entanglement in a Bose-Einstein condensate [J].

Esteve, J. ;

Gross, C. ;

Weller, A. ;

Giovanazzi, S. ;

Oberthaler, M. K. .

NATURE, 2008, 455 (7217) :1216-1219

[6] Number squeezing, quantum fluctuations, and oscillations in mesoscopic Bose Josephson junctions [J].

Ferrini, G. ;

Minguzzi, A. ;

Hekking, F. W. J. .

PHYSICAL REVIEW A, 2008, 78 (02)

[7] A bosonic Josephson junction [J].

Gati, R. ;

Oberthaler, M. K. .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2007, 40 (10) :R61-R89

[8] Condensate splitting in an asymmetric double well for atom chip based sensors [J].

Hall, B. V. ;

Whitlock, S. ;

Anderson, R. ;

Hannaford, P. ;

Sidorov, A. I. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

[9] Nonlinear correction to the boson Josephson-junction model [J].

Jia, XinYan ;

Li, WeiDong ;

Liang, J. Q. .

PHYSICAL REVIEW A, 2008, 78 (02)

[10] Long phase coherence time and number squeezing of two Bose-Einstein condensates on an atom chip [J].

Jo, G. -B. ;

Shin, Y. ;

Will, S. ;

Pasquini, T. A. ;

Saba, M. ;

Ketterle, W. ;

Pritchard, D. E. ;

Vengalattore, M. ;

Prentiss, M. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

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