论文标题
与涡旋量子杂质的合成超流体化学
Synthetic superfluid chemistry with vortex-trapped quantum impurities
论文作者
论文摘要
我们探索使用二维物质波涡旋来限制玻体量子杂质的整体。这是理论上使用质量损坏的两个组成部分毛状 - 彼得斯基方程进行建模的，其中每个组件具有独立的原子数和相等的原子质量。通过改变系统的质量不平衡，我们发现涡旋的形状即使以适度的失衡为变形，导致桶形涡流。我们使用多组分变异方法对其进行量化。计算携带涡流对的杂质的能量，揭示了质量依赖的能量分裂。然后，我们计算杂质的激发态，我们依次将其用于构建涡旋对的“共价键”。我们的工作开辟了一条新的途径，以模拟与超流体系统的合成化学反应。
We explore the effect of using two-dimensional matter-wave vortices to confine an ensemble of bosonic quantum impurities. This is modelled theoretically using a mass-imbalanced homogeneous two component Gross-Pitaevskii equation where each component has independent atom numbers and equal atomic masses. By changing the mass imbalance of our system we find the shape of the vortices are deformed even at modest imbalances, leading to barrel shaped vortices; which we quantify using a multi-component variational approach. The energy of impurity carrying vortex pairs are computed, revealing a mass-dependent energy splitting. We then compute the excited states of the impurity, which we in turn use to construct `covalent bonds' for vortex pairs. Our work opens a new route to simulating synthetic chemical reactions with superfluid systems.
