论文标题
准二极偶极bose-Einstein冷凝物的量子液滴
Quantum droplets of quasi-one-dimensional dipolar Bose-Einstein condensates
论文作者
论文摘要
在一系列突破性的实验中已经实现了超电压偶极液滴，在该实验中，液滴状态的稳定性归因于众所周知的Lee-huang-yang（Lhy）校正的形式，归因于均值野外效应。我们使用分析和数值方法的组合在一维环境中仔细检查偶极液滴状态，并确定实验可行的参数，以访问我们的发现以供将来的实验。特别是，我们确定了受限几何形状中稳定性的制度，找到了多个Roton不稳定性以及支持准二维液滴状态的区域。通过将相互作用淬灭到液滴上，会引起调节不稳定性，并产生多个液滴，以及明亮的孤子和原子辐射。我们还评估了碰撞的液滴鲁棒性，揭示了种群转移和液滴裂变。
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.
