Blue-detuned evanescent field surface traps for neutral atoms based on mode interference in ultrathin optical fibres

  title={Blue-detuned evanescent field surface traps for neutral atoms based on mode interference in ultrathin optical fibres},
  author={G Sagu{\'e} and Alexander Baade and Arno Rauschenbeutel},
  journal={New Journal of Physics},
We present and analyse a novel concept for blue-detuned evanescent field surface traps for cold neutral atoms based on two-mode interference in ultrathin optical fibres. When two or more transverse modes with the same frequency co-propagate in the fibre, their different phase velocities cause a stationary interference pattern to establish. Intensity minima of the evanescent field at any distance from the surface can be created and an array of optical microtraps can thus be obtained around the… 
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