双势阱中少数偶极玻色子的量子关联
量子气体
2016-08-24 v4
摘要
考虑零温度下双势阱势中 个相互作用的偶极玻色原子。该系统由两空间模扩展 Bose-Hubbard (EBH) 哈密顿量描述，其包含（除熟悉的 BH 项外）最近邻相互作用、关联跳跃和玻色子对跳跃。对于 和 粒子的系统，我们解析地计算了基态以及刻画最低能态关联的 Fisher 信息、相干可见度和纠缠熵。基态的结构关键取决于关联跳跃 。一方面，我们发现该过程使得即使在位间原子吸引不足以保证此类态形成时，也可能出现薛定谔猫态。另一方面，在强在位吸引存在时，足够大的 会破坏类猫态，转而支持离域原子相干态。
引用
@article{arxiv.1603.06724,
title = {Quantum correlations of few dipolar bosons in a double-well trap},
author = {Michele Pizzardo and Giovanni Mazzarella and Luca Salasnich},
journal= {arXiv preprint arXiv:1603.06724},
year = {2016}
}
备注
21 pages, 10 figures. This paper has been accepted for publication in a festschrift issue of Journal of Low Temperature Physics in honor of Prof. Flavio Toigo on the occasion of his 70th birthday. The paper extends our previous results, which can be found in arXiv:1410.5321, obtained in the absence of dipolar interaction