A simple integrated single-atom detector

Details A simple integrated single-atom detector A simple integrated single-atom detector

2008-01-21

arxiv.org/abs/0801.3255v2

Optics Letters, Vol. 34, page 259 (2009)

Physics

Atomic Physics

3 pages, 3 figures

Scientific paper

10.1364/OL.34.000259

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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