Superfluidity of Interacting Bosonic Mixtures in Optical Lattices

被引：126

作者：

Gadway, Bryce ^{[1
]}

Pertot, Daniel ^{[1
]}

Reimann, Rene ^{[1
]}

Schneble, Dominik ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.105.045303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of many-body interaction effects for a homonuclear bosonic mixture in a three-dimensional optical lattice with variable state dependence along one axis. Near the superfluid-to-Mott insulator transition for one component, we find that the presence of a second component can reduce the apparent superfluid coherence, most significantly when the second component either experiences a strongly localizing lattice potential or none at all. We examine this effect by varying the relative populations and lattice depths, and discuss the observed behavior in view of recent proposals for atomic-disorder and polaron-induced localization.

引用

页数：4

共 29 条

[1] Phase diagram of two-component bosons on an optical lattice [J].

Altman, E ;

Hofstetter, W ;

Demler, E ;

Lukin, MD .

NEW JOURNAL OF PHYSICS, 2003, 5 :113.1-113.19

[2]

[Anonymous], COMMUNICATION

[3] Role of Interactions in 87Rb-40K Bose-Fermi Mixtures in a 3D Optical Lattice [J].

Best, Th. ;

Will, S. ;

Schneider, U. ;

Hackermueller, L. ;

van Oosten, D. ;

Bloch, I. ;

Luehmann, D. -S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (03)

[4] Bose-Einstein condensation in an optical lattice [J].

Blakie, P. B. ;

Wang, Wen-Xin .

PHYSICAL REVIEW A, 2007, 76 (05)

[5] Adiabatic loading of bosons into optical lattices [J].

Blakie, PB ;

Porto, JV .

PHYSICAL REVIEW A, 2004, 69 (01) :8

[6] Polaron physics in optical lattices [J].

Bruderer, Martin ;

Klein, Alexander ;

Clark, Stephen R. ;

Jaksch, Dieter .

PHYSICAL REVIEW A, 2007, 76 (01)

[7] Mixtures of strongly interacting bosons in optical lattices [J].

Buonsante, P. ;

Giampaolo, S. M. ;

Illuminati, F. ;

Penna, V. ;

Vezzani, A. .

PHYSICAL REVIEW LETTERS, 2008, 100 (24)

[8] Gutzwiller approach to the Bose-Hubbard model with random local impurities [J].

Buonsante, Pierfrancesco ;

Massel, Francesco ;

Penna, Vittorio ;

Vezzani, Alessandro .

PHYSICAL REVIEW A, 2009, 79 (01)

[9] Degenerate Bose-Bose mixture in a three-dimensional optical lattice [J].

Catani, J. ;

De Sarlo, L. ;

Barontini, G. ;

Minardi, F. ;

Inguscio, M. .

PHYSICAL REVIEW A, 2008, 77 (01)

[10] Quantum-state control in optical lattices [J].

Deutsch, IH ;

Jessen, PS .

PHYSICAL REVIEW A, 1998, 57 (03) :1972-1986

← 1 2 3 →