Hybrid multisite excitations in dipolar condensates in optical lattices

被引：52

作者：

Klawunn, M. ^{[1
]}

Santos, L. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.80.013611

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Strong one-dimensional (1D) lattices usually lead to unconnected two-dimensional gases. The long-range character of the dipole-dipole interactions leads to a scenario where nonoverlapping gases at different sites may interact significantly. We show that the excitations of nonoverlapping condensates in 1D optical lattices acquire a bandlike character, being collectively shared by different sites. In particular, the hybridization of the modes significantly enhances the rotonization of the excitations and may induce roton instability. We discuss the observability of this effect in ongoing experiments.

引用

页数：5

共 25 条

[1]

[Anonymous], ARXIV08121838

[2] Mott-insulator phases of nonlocally coupled one-dimensional dipolar Bose gases [J].

Argueelles, A. ;

Santos, L. .

PHYSICAL REVIEW A, 2007, 75 (05)

[3] All-optical production of chromium Bose-Einstein condensates [J].

Beaufils, Q. ;

Chicireanu, R. ;

Zanon, T. ;

Laburthe-Tolra, B. ;

Marechal, E. ;

Vernac, L. ;

Keller, J. -C. ;

Gorceix, O. .

PHYSICAL REVIEW A, 2008, 77 (06)

[4] Hidden order in 1D bose insulators [J].

Dalla Torre, Emanuele G. ;

Berg, Erez ;

Altman, Ehud .

PHYSICAL REVIEW LETTERS, 2006, 97 (26)

[5] Formation of ultracold polar molecules in the rovibrational ground state [J].

Deiglmayr, J. ;

Grochola, A. ;

Repp, M. ;

Moertlbauer, K. ;

Glueck, C. ;

Lange, J. ;

Dulieu, O. ;

Wester, R. ;

Weidemueller, M. .

PHYSICAL REVIEW LETTERS, 2008, 101 (13)

[6] 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

[7] Magnetic Dipolar Interaction in a Bose-Einstein Condensate Atomic Interferometer [J].

Fattori, M. ;

Roati, G. ;

Deissler, B. ;

D'Errico, C. ;

Zaccanti, M. ;

Jona-Lasinio, M. ;

Santos, L. ;

Inguscio, M. ;

Modugno, G. .

PHYSICAL REVIEW LETTERS, 2008, 101 (19)

[8] Quantum phases of dipolar bosons in optical lattices -: art. no. 170406 [J].

Góral, K ;

Santos, L ;

Lewenstein, M .

PHYSICAL REVIEW LETTERS, 2002, 88 (17) :4

[9] Bose-Einstein condensation of chromium [J].

Griesmaier, A ;

Werner, J ;

Hensler, S ;

Stuhler, J ;

Pfau, T .

PHYSICAL REVIEW LETTERS, 2005, 94 (16)

[10] Vortex lattices in Bose-Einstein condensates with dipolar interactions beyond the weak-interaction limit [J].

Komineas, S. ;

Cooper, N. R. .

PHYSICAL REVIEW A, 2007, 75 (02)

← 1 2 3 →