Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber

  title={Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber},
  author={S. Scheel and Stefan Yoshi Buhmann and Christoph Clausen and Philipp Schneeweiss},
  journal={Physical Review A},
We study the spontaneous emission of an excited atom close to an optical nanofiber and the resulting scattering forces. For a suitably chosen orientation of the atomic dipole, the spontaneous emission pattern becomes asymmetric and a resonant Casimir-Polder force parallel to the fiber axis arises. For a simple model case, we show that such a lateral force is due to the interaction of the circularly oscillating atomic dipole moment with its image inside the material. With the Casimir\char21… 

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