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Quantum droplets of quasi-one-dimensional dipolar Bose–Einstein condensates
Journal of Physics Communications ( IF 1.1 ) Pub Date : 2020-12-17 , DOI: 10.1088/2399-6528/abcc3b
Matthew Edmonds 1 , Thomas Bland 2 , Nick Parker 2
Affiliation  

Ultracold dipolar droplets have been realized in a series of ground-breaking experiments, where the stability of the droplet state is attributed to beyond-mean-field effects in the form of the celebrated Lee-Huang-Yang (LHY) correction. We scrutinize the dipolar droplet states in a one-dimensional context using a combination of analytical and numerical approaches, and identify experimentally viable parameters for accessing our findings for future experiments. In particular we identify regimes of stability in the restricted geometry, finding multiple roton instabilities as well as regions supporting quasi-one-dimensional droplet states. By applying an interaction quench to the droplet, a modulational instability is induced and multiple droplets are produced, along with bright solitons and atomic radiation. We also assess the droplets robustness to collisions, revealing population transfer and droplet fission.



中文翻译:

准一维偶极玻色-爱因斯坦凝聚物的量子滴

在一系列突破性的实验中已经实现了超冷偶极液滴,其中液滴状态的稳定性归因于超出平均场效应的著名的Lee-Huang-Yang(LHY)校正形式。我们使用分析和数值方法的组合在一维上下文中检查偶极液滴状态,并确定实验上可行的参数以访问我们的发现以供将来进行实验。特别是,我们确定了受限制的几何形状中的稳定状态,发现了多个roton不稳定性以及支持准一维液滴状态的区域。通过对液滴施加相互作用淬灭,会引起调制不稳定性,并产生多个液滴,以及明亮的孤子和原子辐射。

更新日期:2020-12-17
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