首页> 外文期刊>Applied physics. B, Lasers and optics >Observation of motional sidebands in single ~(40)Ca~+ ions with improved detection efficiency
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Observation of motional sidebands in single ~(40)Ca~+ ions with improved detection efficiency

机译:观察单个〜(40)Ca〜+离子中的运动边带,提高了检测效率

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摘要

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 4~2S_(1/2)-3~2D_(5/2) electric quadrupole transition in ~(40)Ca~+ are observed.
机译:描述了一种有效去除背景光子并改善从单个冷却离子检测荧光时的信噪比的方法。在该方法中,使用了位于离焦位置的附加空间滤光片,以从捕获电极表面去除散射的光子。获得了大于200的信噪比。通过使用此设置,可以观察到〜(40)Ca〜+中的4〜2S_(1/2)-3〜2D_(5/2)四极电跃迁上的分辨载波和运动边带。

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