近日，西安交通大学的张永昌及其研究团队取得一项新进展。经过不懈努力，他们对具有任意偶极取向偶极凝聚混合物中的量子液滴进行研究。相关研究成果已于2024年7月11日在国际知名学术期刊《物理评论A》上发表。

该研究团队通过考察双组分偶极玻色-爱因斯坦凝聚体，探究了两种物质的极化取向夹角对基态的影响，并指出两组分的混相状态不仅可以通过组分间的接触相互作用来调节，还可以通过调整极化角来实现。

尤其值得注意的是，在外部限制条件下，这两种组分倾向于在不混相状态下分裂成多个彼此分离的液滴，且这些液滴呈现出锯齿状的轮廓。此外，分裂形成的液滴数量仅与极化角有关。这一发现为探索偶极量子气体中物质的涌现状态提供了一个有希望的自由度。

附：英文原文

Title: Quantum droplets in dipolar condensate mixtures with arbitrary dipole orientations

Author: Liang-Jun He, Bo Liu, Yong-Chang Zhang

Issue&Volume: 2024/07/11

Abstract: Through considering a two-component dipolar Bose-Einstein condensate, we investigate the influence of the angle between the polarization orientations of the two species on the ground states and show that the miscibility between the two components can be adjusted not only by the inter-component contact interaction but also by the polarization angle. Particularly, in the presence of an external confinement, the two species exhibit a preference for splitting into multiple droplets separated from each other in the immiscible regime, featuring a zig-zag-like profile. Furthermore, the number of separated droplets depends solely on the polarization angle. This introduces a promising degree of freedom for exploring emergent states of matter in dipolar quantum gases.

DOI: 10.1103/PhysRevA.110.013308

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.013308