Experimental Improvement of Signal of a Single Laser-Cooled Trapped 40Ca+ Ion

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2007,（5）
• 页码范围: 1217-1219
• 页数: 3页
• 语种: 英文

摘要

A single 40Ca+ ion is loaded in a miniature Paul trap and the probability of directly loading a single ion is above 50%. The signal-to-noise ratio and the storage time for a single ion have been improved by minimizing the ion micromotion and locking a 397 nm cooling laser to a Fabry-Perot interferometer and optogalvanic signal. From the fluorescence spectrum, the ion temperature is estimated to be about 5mK.