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中国科学通报:英文版

A cloud of laser cooled 40Ca+ in a linear ion trap

Zhou, Xu, YouYang, Xie, Yi Yi, Guo, Shi Shu, HuaLin, Li, Jiao-Mei, 。 Huang, Xue-Ren, Feng, Mang

Published Jan 1, 2010• 0 citations
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Abstract

一群 40Ca+ 成功地用放射被套住并且冷却一红去谐 397 nm 激光横梁并且一反响在我们的原型的 866 nm 激光横梁线性离子套住,它为学习量信息处理被设计并且构造。我们描绘了离子云的尺寸,估计温度在毫的顺序 -- 克尔文氏绝对温度。

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44Ca+, Zn+, or Ga+ ions are sympathetically cooled by Coulomb interaction with laser-cooled 40Ca+ ions, and motional resonances of these ions are observed by monitoring the fluorescence of the 40Ca+ ions. In the experiment of sympathetic cooling of 44Ca+, the ratio of the decrease in the fluorescence signal at the motional resonance of the sympathetically cooled species to that at the motional resonance of the laser-cooled species is almost proportional to the number ratio of the two species. In the case of Ga+ ions as the sympathetically cooled species, the change in the response of sympathetically cooled species becomes larger as the temperature of the ion cloud decreases. Crystallization of an ion cloud which contains both 40Ca+ and Zn+ (or Ga+) is observed.