Observation of motional sidebands in single 40Ca+ ions with improved detection efficiency
Observation of motional sidebands in single 40Ca+ ions with improved detection efficiency
复制标题
观察单个 40Ca 离子的运动边带，提高检测效率
DOI：
10.1007/s00340-005-1856-8
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Urabe
中科院分区：
文献类型：
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作者：
H. Sawamura;H. Kitamura;K. Toyoda;S. Urabe
描述了一种在单个冷却离子荧光检测中有效去除背景光子并提高信号背景比的方法。在该方法中，使用放置在离焦位置的附加空间滤波器来去除来自陷阱电极表面的散射光子。获得超过 200 的信号背景比。通过使用此设置，观察到 40Ca+ 中 42S1/2–32D5/2 电四极跃迁上的解析载流子和运动边带。
A method for effectively removing background photons and improving the signal-to-background ratio in detection of fluorescence from a single cooled ion is described. In the method, an additional spatial filter placed at an off-focal position is used to remove scattered photons from trap-electrode surfaces. A signal-to-background ratio of more than 200 is obtained. By using this setup, a resolved carrier and motional sidebands on the 42S1/2–32D5/2electric quadrupole transition in40Ca+are observed.