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VOLUME 83, NUMBER 13 P H Y S I C A L R E V I E W L E T T E R S 27 SEPTEMBER 1999 Vortices in a Bose-Einstein Condensate
 

Summary: VOLUME 83, NUMBER 13 P H Y S I C A L R E V I E W L E T T E R S 27 SEPTEMBER 1999
Vortices in a Bose-Einstein Condensate
M. R. Matthews, B. P. Anderson,* P. C. Haljan, D. S. Hall,
C. E. Wieman, and E. A. Cornell*
JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado,
Boulder, Colorado 80309-0440
(Received 6 August 1999)
We have created vortices in two-component Bose-Einstein condensates. The vortex state was created
through a coherent process involving the spatial and temporal control of interconversion between the
two components. Using an interference technique, we map the phase of the vortex state to confirm
that it possesses angular momentum. We can create vortices in either of the two components and have
observed differences in the dynamics and stability.
PACS numbers: 03.75.Fi, 42.50.Md, 67.57.Fg, 67.90.+z
The concept of a vortex is at the center of our under-
standing of superfluidity. A vortex is a topological fea-
ture of a superfluid--in a closed path around the vortex,
the phase undergoes a 2p winding and the superfluid flow
is quantized. Following the experimental realization of a
dilute atomic Bose-Einstein condensate (BEC) [1], much
theoretical effort has been directed towards the formation

  

Source: Anderson, Brian P. - Optical Sciences Center, University of Arizona

 

Collections: Physics