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arXiv 0801.3255physics.atom-phphysics.optics
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一种简单的集成单原子探测器

A simple integrated single-atom detector

Marco Wilzbach, Dennis Heine, Sönke Groth, Xiyuan Liu, Thomas Raub, Björn Hessmo, Jörg Schmiedmayer

摘要:

我们提出了一个可靠的和强大的集成荧光检测器能够检测单个原子。该检测器由用于精确传输激发光的锥形透镜单模光纤和用于收集荧光的多模光纤组成。两者都安装在原子芯片上光刻定义的SU-8固定结构中。在磁波导中自由传播的Rb ~(87)原子的探测效率高达66%,在短积分时间内获得了超过100的信噪比。

英文摘要:

We present a reliable and robust integrated fluorescence detector capable of detecting single atoms. The detector consists of a tapered lensed single-mode fiber for precise delivery of excitation light and a multimode fiber to collect the fluorescence. Both are mounted in lithographically defined SU-8 holding structures on an atom chip. Rb87 atoms propagating freely in a magnetic guide are detected with an efficiency of up to 66%, and a signal-to-noise ratio in excess of 100 is obtained for short integration times.

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