Observation of Persistent Flow of a Bose-Einstein Condensate in a Toroidal Trap
Observation of Persistent Flow of a Bose-Einstein Condensate in a Toroidal Trap
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 …