Fiber-optical switch controlled by a single atom.

@article{OShea2013FiberopticalSC,
  title={Fiber-optical switch controlled by a single atom.},
  author={Danny O'Shea and Christian Junge and J{\"u}rgen Volz and Arno Rauschenbeutel},
  journal={Physical review letters},
  year={2013},
  volume={111 19},
  pages={
          193601
        }
}
We demonstrate highly efficient switching of optical signals between two optical fibers controlled by a single atom. The key element of our experiment is a whispering-gallery-mode bottle microresonator, which is coupled to a single atom and interfaced by two tapered fiber couplers. This system reaches the strong coupling regime of cavity quantum electrodynamics, leading to a vacuum Rabi splitting in the excitation spectrum. We systematically investigate the switching efficiency of our system, i… 

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