发表机构
Aix Marseille Université; CNRS（艾克斯马赛大学; 法国国家科学研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文描述了一种宏观线性四极阱，用于在室温下捕获空气中的带电微米级颗粒，通过额外电压补偿重力，并利用空心玻璃微球实现高精度荷质比测量。
AI 中文摘要
我们描述并使用了宏观线性四极阱来探索带电颗粒的捕获和平衡特性。这些装置在用于捕获原子离子时，是基于离子的量子计算机和光学原子钟的核心。为了展示少颗粒捕获的特性，并观察带电颗粒上不同的力平衡，一个在室温条件下运行的宏观线性阱正在捕获微米级颗粒。与原子或分子离子相比，它们的质量不可忽略，需要额外电压进行重力补偿。我们展示了如何通过实验证明这种补偿，并且选择空心玻璃微球具有实验重复性好的优势，这使得人们能够以较高精度推断出被捕获颗粒的荷质比。
英文摘要
We describe and use a macroscopic linear quadrupolar trap to explore the trapping and equilibrium properties of charged particles. These devices, when operated to trap atomic ions, are at the core of ion based quantum computer and optical atomic clock. To illustrate the characteristics of few particle trapping, and observe different force balance on a charged particle, a macroscopic linear trap, operating at room condition, is trapping micrometer-sized particles. Compared to atomic or molecular ions, their mass can not be neglected and requires an extra voltage for gravity force compensation. We show how this compensation can be demonstrated experimentally and that the choice of hollow-core glass spheres has the advantage of a good reproducibility of the experiments, that allows one to deduce with good precision the charge-to-mass ratio of the trapped particle.
