Resonator-Aided Single-Atom Detection on a Microfabricated Chip

Details Resonator-Aided Single-Atom Detection on a Microfabricated Chip Resonator-Aided Single-Atom Detection on a Microfabricated Chip

2006-03-24

arxiv.org/abs/cond-mat/0603675v1

Physics

Condensed Matter

Other Condensed Matter

4.1 pages, 5 figures, and submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.97.023002

We use an optical cavity to detect single atoms magnetically trapped on an atom chip. We implement the detection using both fluorescence into the cavity and reduction in cavity transmission due to the presence of atoms. In fluorescence, we register 2.0(2) photon counts per atom, which allows us to detect single atoms with 75% efficiency in 250 microseconds. In absorption, we measure transmission attenuation of 3.3(3)% per atom, which allows us to count small numbers of atoms with a resolution of about 1 atom.

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