论文标题
大$ {}^{}^{113} \ mathrm {cd}^{+} $ ion Crystal with $ {}^{40} \ Mathrm {ca}^{+} $
Sympathetic cooling of a large ${}^{113}\mathrm{Cd}^{+}$ ion crystal with ${}^{40}\mathrm{Ca}^{+}$ in a linear Paul trap
论文作者
论文摘要
我们的交感神经冷却和结晶$ {}^{113} \ mathrm {cd}^{+} $ ions带有激光冷却的$ {}^{}^{40} \ Mathrm {ca}^{+}^{+} $ ions，并直接观察了完整的大型Bicrystal结构。大两个组件晶体最多包含$ 3.5 \ times10^3 $ $ {}^{40} \ Mathrm {Ca}^{+} $ ions和$ 6.8 \ times10^3 $ {}^3 $ {}^{113}^{113} \ MATHRM {CD}^{CD}^{+}^{+} $ ions。结晶的$ {}^{113} \ mathrm {cd}^{+} $离子的温度被测量为低至41 mk，质量比大。此外，我们研究了超代价样品的几种特性和结构。研究了影响交感神经冷却效果的因素，包括电气参数以及激光冷离子与交感冷却离子之间的数值比。本文的结果丰富了大型两分量离子晶体的实验研究，以及$ {}^{}^{113} \ Mathrm {cd}^{+} $离子的超低样品，使得有可能进一步提高Cadmium-ion Microvave频率标准的准确性。
We have sympathetically cooled and crystallized ${}^{113}\mathrm{Cd}^{+}$ ions with laser-cooled ${}^{40}\mathrm{Ca}^{+}$ ions, and directly observed the complete large bicrystal structure in a linear Paul trap. The large two-component crystal contains up to $3.5\times10^3$ ${}^{40}\mathrm{Ca}^{+}$ ions and $6.8\times10^3$ ${}^{113}\mathrm{Cd}^{+}$ ions. The temperature of the crystallized ${}^{113}\mathrm{Cd}^{+}$ ions was measured to be as low as 41 mK with a large mass ratio. Moreover, we have studied several properties and structures of the ultracold sample. The factors affecting the sympathetic cooling effect were studied, including the electrical parameters and the number ratio between laser-cooled ions and sympathetically-cooled ions. The results of this paper enrich the experimental research of large two-component ion crystals, and the ultracold sample of ${}^{113}\mathrm{Cd}^{+}$ ions makes it possible to further improve the accuracy of the cadmium-ion microwave frequency standard.
