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arXiv 1706.09388cond-mat.quant-gasphysics.atom-ph
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倾斜偶极子多体系统中的条纹态

Striped states in a many-body system of tilted dipoles

Matthias Wenzel, Fabian Böttcher, Tim Langen, Igor Ferrier-Barbut, Tilman Pfau

摘要:

我们从理论和实验上研究了强约束偶极玻色-爱因斯坦凝聚体在超平均场效应量子力学稳定化体系中的行为。理论上,我们证明了自组织条纹基态的扩展Gross-Pitaevskii理论的框架内预测。在实验上,通过倾斜磁偶极子,我们表明,自组织条纹状态可以产生,可能在其亚稳态。多条纹的物质波干涉实验表明,不存在长程非对角序(全局相位相干)。我们概述了一个参数范围内,全球相位相干可以建立,从而铺平了道路,在这个系统中的超固态的观察。

英文摘要:

We study theoretically and experimentally the behaviour of a strongly confined dipolar Bose-Einstein condensate, in the regime of quantum-mechanical stabilization by beyond-mean-field effects. Theoretically, we demonstrate that self-organized striped ground states are predicted in the framework of the extended Gross-Pitaevskii theory. Experimentally, by tilting the magnetic dipoles we show that self-organized striped states can be generated, likely in their metastable state. Matter-wave interference experiments with multiple stripes show that there is no long-range off-diagonal order (global phase coherence). We outline a parameter range where global phase coherence could be established, thus paving the way towards the observation of supersolid states in this system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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