AI 中文总结
该研究通过超声膨胀制备氙原子束，探测其与量子基态悬浮纳米球的碰撞，实现96%置信度下50 keV/c以下单个动量冲量的观测，为原子与悬浮系统短程相互作用及冲量力传感研究奠定基础。
AI 中文摘要
我们采用超声膨胀法制备了具有窄动量分布的时间门控定向氙原子束，并探测其与冷却至量子基态的悬浮纳米球的碰撞。我们以96%的置信度观测到了低于50 keV/c的单个动量冲量，并区分了原子束的定向动量转移与热碰撞背景。本实验为探索原子与悬浮系统间的距离依赖短程相互作用，以及在先前未探索的参数区域利用悬浮平台进行冲量力传感迈出了第一步。
英文摘要
Using supersonic expansion, we create a time-gated, directional beam of Xe atoms with a narrow momentum distribution and detect their collisions with a levitated nanosphere cooled to its quantum ground state. We observe individual momentum kicks below 50 keV/c with 96% confidence and distinguish directional momentum transfer from the atomic beam against the background of thermal collisions. Our experiments constitute a first step toward the exploration of distance-dependent short-range interactions between atoms and levitated systems, as well as toward the use of levitated platforms for impulsive force sensing in previously unexplored parameter regimes.
