Dynamical realization of macroscopic superposition states of cold bosons in a tilted double well

被引：54

作者：

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

Dounas-Frazer, D. R. ^{[1
]}

Garcia-March, M. A. ^{[1
]}

机构：

[1] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA

来源：

EPL | 2010年 / 90卷 / 01期

基金：

美国国家科学基金会;

关键词：

QUANTUM DYNAMICS; ENTANGLEMENT; SYMMETRY; GASES;

D O I：

10.1209/0295-5075/90/10005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present exact expressions for the quantum sloshing of Bose-Einstein condensates in a tilted two-well potential. Tunneling is suppressed by a small potential difference between wells, or tilt. However, tunneling resonances occur for critical values of the tilt when the barrier is high. At resonance, tunneling times on the order of 10-100 ms are possible. Furthermore, such tilted resonances lead to a dynamical scheme for creating few-body NOON-like macroscopic superposition states which are protected by the many-body wave function against potential fluctuations. Copyright (C) EPLA, 2010

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页数：6

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