Effect of interspecies interactions on the collision properties of bright-bright solitons in two-species Bose-Einstein condensates

被引：13

作者：

He, Z. M. ^{[1
]}

Wang, D. L. ^{[1
]}

Ding, J. W. ^{[1
,2
]}

Yan, X. H. ^{[2
]}

机构：

[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China

[2] Nanjing Univ Post & Telecommun, Coll Elect Sci Engn, Nanjing 211106, Jiangsu, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL D | 2012年 / 66卷 / 05期

基金：

中国国家自然科学基金;

关键词：

DARK SOLITONS;

D O I：

10.1140/epjd/e2012-20678-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Considering the time-dependent interspecies interactions, we study the collision properties of bright-bright solitons in two species Bose-Einstein condensates with the harmonic external potentials. It is shown that the collision behaviors of bright-bright solitons can be controlled by adjusting the strength of interspecies interaction and transverse trapping frequency of harmonic potential. Interestingly, the two separate solitons can merge into a single bound complex due to the stronger attractive interspecies interactions. Especially, a transmission collision is obtained from not only attractive but also repulsive interspecies interaction, different from previous theory. When the interspecies interaction is exponentially decreased, a reflection-transmission collision transition is observed for the repulsive interspecies interaction. Meanwhile, an experimental protocol is designed to observe the collision behaviors of the bright-bright solitons in the currently experimental conditions.

引用

页数：7

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