Energetically constrained co-tunneling of cold atoms

被引：12

作者：

Kolovsky, Andrey R. ^{[1
,2
]}

Link, Julia ^{[3
]}

Wimberger, Sandro ^{[3
]}

机构：

[1] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia

[2] Siberian Fed Univ, Krasnoyarsk 660041, Russia

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

来源：

NEW JOURNAL OF PHYSICS | 2012年 / 14卷

基金：

俄罗斯基础研究基金会;

关键词：

LATTICE;

D O I：

10.1088/1367-2630/14/7/075002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study under-barrier tunneling for a pair of energetically bound bosonic atoms in an optical lattice with a barrier. We identify the conditions under which this exotic molecule tunnels as a point particle with the coordinate given by the bound pair center of mass and discuss the atomic co-tunneling beyond this regime. In particular, we quantitatively analyze resonantly enhanced co-tunneling, where two interacting atoms penetrate the barrier with higher probability than a single atom.

引用

页数：13

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