论文标题
超低二进制螺旋气中的量子 - 透明驱动的动力学动力学
Quantum-Fluctuation-Driven Dynamics of Droplet Splashing, Recoiling and Deposition in Ultracold Binary Bose Gases
论文作者
论文摘要
液滴对表面的影响实际上与自然和工业的各个领域有关，而由于各种难以管理的因素，对其结果的完全控制仍然具有挑战性。在这项工作中，我们提出了超速原子平台中液滴冲击结果的量子模拟。具体而言，我们研究了从初始城镇Soliton到量子液滴的形成的二维Bose-Bose混合物的量子 - 裂开驱动的动力学（QFDD）。通过调整最初城镇的波动能量，通过其大小和数量来调查，随后的QFDD可以产生各种结果，包括溅起，后退和沉积，类似于滴落撞击动态的结果。我们利用韦伯数来确定溅水和后退的阈值，并进一步建立了在后退方案中最大扩散因子和韦伯数之间的普遍缩放定律。此外，我们表明沉积方案中的残留QFDD可用于探测量子液滴的集体呼吸模式。我们的结果揭示了液滴撞击结果的机制，可以在冷原子实验中直接测试，并可以为探索清洁和完全控制的量子设置中的有趣的液滴动力学铺平道路。
Droplet impact on a surface is practically relevant to a variety of fields in nature and industry, while a complete control of its outcomes remains challenging due to various unmanageable factors. In this work, we propose the quantum simulation of droplet impact outcomes in the platform of ultracold atoms. Specifically, we study the quantum-fluctuation-driven dynamics (QFDD) of two-dimensional Bose-Bose mixtures from an initial Townes soliton towards the formation of a quantum droplet. By tuning the fluctuation energy of the initial Townes state through its size and number, the subsequent QFDD can produce various outcomes including splashing, recoiling, and deposition, similar to those in droplet impact dynamics. We have utilized the Weber number to identify the thresholds of splashing and recoiling, and further established a universal scaling law between the maximum spreading factor and the Weber number in the recoiling regime. In addition, we show that the residual QFDD in the deposition regime can be used to probe the collective breathing modes of a quantum droplet. Our results reveal a mechanism for the droplet impact outcomes, which can be directly tested in cold-atom experiments and can pave the way for exploring intriguing droplet dynamics in a clean and fully controlled quantum setting.
