Nonlinear π phase shift for single fibre-guided photons interacting with a single resonator-enhanced atom

@article{Volz2014NonlinearP,
  title={Nonlinear $\pi$ phase shift for single fibre-guided photons interacting with a single resonator-enhanced atom},
  author={J{\"u}rgen Volz and Michael Scheucher and Christian Junge and Arno Rauschenbeutel},
  journal={Nature Photonics},
  year={2014},
  volume={8},
  pages={965-970}
}
A nonlinear π phase shift is induced by the interaction between a 85Rb atom and a fibre-coupled bottle resonator. 
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