Ultracold dipolar few-boson ensembles in a triple-well trap
Ultracold dipolar few-boson ensembles in a triple-well trap
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DOI：
10.1088/0953-4075/46/8/085304
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
B. Chatterjee;I. Brouzos;Lushuai Cao;P. Schmelcher
中科院分区：
文献类型：
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作者：
B. Chatterjee;I. Brouzos;Lushuai Cao;P. Schmelcher
我们从少体从头算的角度研究了一维三势阱中超冷偶极玻色子的基态性质和隧穿动力学。我们的重点主要是在偶极玻色子的接触相互作用玻色子相比，独特的功能。观察到非常强的偶极相互作用形成的井内定位。一般的人口重排，以及破碎和本地化的影响已被发现，强烈依赖于粒子数。两个粒子的能谱表现出避免交叉，导致几个不同的共振涉及不同的频带，即带间共振隧穿动力学。相应的机制进行了研究，通过研究对概率和进行本征态分析。
We investigate the ground state properties and tunnelling dynamics of ultracold dipolar bosons in a one-dimensional triple-well trap from a few-body ab initio perspective. Our focus is primarily on the distinctive features of dipolar bosons compared to the contact interacting bosons. The formation of intra-well localization is observed for a very strong dipolar interaction. General population rearrangement as well as fragmentation and localization effects has been found, depending strongly on the particle number. The energy spectrum for two particles exhibits avoided crossings that lead to several distinct resonances involving different bands, i.e. to an inter-band resonant tunnelling dynamics. The corresponding mechanisms are investigated by studying the pair probability and performing an eigenstate analysis.