论文标题
紧凑的室温离子系统的真空表征
Vacuum Characterization of a Compact Room-temperature Trapped Ion System
论文作者
论文摘要
我们介绍了一个紧凑的室温捕获离子系统的设计和真空性能，用于量子计算，包括超高真空包装（UHV）包装，一个微型的表面陷阱和小型形式离子离子泵。该系统旨在通过最大程度地减少系统尺寸和重量来最大程度地提高机械稳定性和鲁棒性。 UHV软件包的内部体积仅为2 cm $^3 $，与在被困离子实验中使用的常规真空室相比，这是显着降低。我们演示了该系统中$^{174} $ yb $^+$离子的捕获，并通过监视双孔潜能和离子链重新排序事件中的离子跳速的速率来表征UHV软件包中的真空水平。该真空包装中计算出的压力约为1.5e-11 Torr，这对于大多数当前捕获的离子实验就足够了。
We present the design and vacuum performance of a compact room-temperature trapped ion system for quantum computing, consisting of a ultra-high vacuum (UHV) package, a micro-fabricated surface trap and a small form-factor ion pump. The system is designed to maximize mechanical stability and robustness by minimizing the system size and weight. The internal volume of the UHV package is only 2 cm$^3$, a significant reduction in comparison with conventional vacuum chambers used in trapped ion experiments. We demonstrate trapping of $^{174}$Yb$^+$ ions in this system and characterize the vacuum level in the UHV package by monitoring both the rates of ion hopping in a double-well potential and ion chain reordering events. The calculated pressure in this vacuum package is about 1.5e-11 Torr, which is sufficient for the majority of current trapped ion experiments.
