Directed selective-tunneling of bosons with periodically modulated interaction

被引：4

作者：

Lu, Gengbiao ^{[1
,2
]}

Fu, Li-Bin ^{[2
]}

Hai, Wenhua ^{[3
]}

Zou, Mingliang ^{[3
]}

Guo, Yu ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Dept Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China

[2] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China

[3] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 12-13期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Cold atoms; Coherent control; Tunneling dynamics; Coherent destruction of tunneling; OSCILLATING FIELD; QUANTUM;

D O I：

10.1016/j.physleta.2015.01.034

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the tunneling dynamics of bosons with periodically modulated interaction held in a triple-well potential. In high-frequency approximation, we derive a set of reduced coupled equations and the corresponding Floquet solutions are obtained. Based on the analytical results and their numerical correspondence, the directed selective-tunneling effect of a single atom is demonstrated when all bosons are prepared in middle well initially. A scheme for separating a single atom from N bosons is presented, in which the atom can be trapped in right or left well by adjusting the modulation strength. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：947 / 951

页数：5

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