Collapse and revival in inter-band oscillations of a two-band Bose-Hubbard model

被引：14

作者：

Ploetz, Patrick ^{[1
]}

Madronero, Javier ^{[2
]}

Wimberger, Sandro ^{[1
]}

机构：

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

[2] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 08期

关键词：

EINSTEIN CONDENSATE; OPTICAL LATTICES; QUANTUM; ENTANGLEMENT; DYNAMICS; FIELD; ATOMS;

D O I：

10.1088/0953-4075/43/8/081001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effect of a many-body interaction on inter-band oscillations in a two-band Bose-Hubbard model with an external Stark force. Weak and strong inter-band oscillations are observed, where the latter arise from a resonant coupling of the bands. These oscillations collapse and revive due to a weak two-body interaction between the atoms. Effective models for oscillations in and out of resonance are introduced that provide predictions for the system's behaviour, particularly for the time scales for the collapse and revival of the resonant inter-band oscillations.

引用

页数：6

共 28 条

[1] Controlled atom dynamics in a double-well optical lattice [J].

Anderlini, M ;

Sebby-Strabley, J ;

Kruse, J ;

Porto, JV ;

Phillips, WD .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2006, 39 (10) :S199-S210

[2]

[Anonymous], 1968, HDB MATH FUNCTIONS

[3] Many-body physics with ultracold gases [J].

Bloch, Immanuel ;

Dalibard, Jean ;

Zwerger, Wilhelm .

REVIEWS OF MODERN PHYSICS, 2008, 80 (03) :885-964

[4] Quantum coherence and entanglement with ultracold atoms in optical lattices [J].

Bloch, Immanuel .

NATURE, 2008, 453 (7198) :1016-1022

[5] Bloch-Zener oscillations [J].

Breid, B. M. ;

Witthaut, D. ;

Korsch, H. J. .

NEW JOURNAL OF PHYSICS, 2006, 8

[6] Non-dispersive wave packets in periodically driven quantum systems [J].

Buchleitner, A ;

Delande, D ;

Zakrzewski, J .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2002, 368 (05) :409-547

[7] Superfluid-insulator transition in a periodically driven optical lattice [J].

Eckardt, A ;

Weiss, C ;

Holthaus, M .

PHYSICAL REVIEW LETTERS, 2005, 95 (26)

[8] 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

[9] TIGHTLY BOUND ELECTRONS IN A UNIFORM ELECTRIC-FIELD [J].

FUKUYAMA, H ;

BARI, RA .

PHYSICAL REVIEW B, 1973, 8 (12) :5579-5586

[10] Quantum-enhanced measurements: Beating the standard quantum limit [J].

Giovannetti, V ;

Lloyd, S ;

Maccone, L .

SCIENCE, 2004, 306 (5700) :1330-1336

← 1 2 3 →