Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap.

@article{Ryu2007ObservationOP,
  title={Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap.},
  author={C-W. Ryu and Mette Fredslund Andersen and Pierre Clad{\'e} and Vasant Natarajan and Kristian Helmerson and William Danial Phillips},
  journal={Physical review letters},
  year={2007},
  volume={99 26},
  pages={
          260401
        }
}
  • C-W. Ryu, Mette Fredslund Andersen, +3 authors William Danial Phillips
  • Published 2007
  • Medicine, Physics
  • Physical review letters
  • We have observed the persistent flow of Bose-condensed atoms in a toroidal trap. The flow persists without decay for up to 10 s, limited only by experimental factors such as drift and trap lifetime. The quantized rotation was initiated by transferring one unit variant Planck's over 2pi of the orbital angular momentum from Laguerre-Gaussian photons to each atom. Stable flow was only possible when the trap was multiply connected, and was observed with a Bose-Einstein condensate fraction as small… CONTINUE READING

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