Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
VOLUME 83, NUMBER 17 P H Y S I C A L R E V I E W L E T T E R S 25 OCTOBER 1999 Watching a Superfluid Untwist Itself: Recurrence of Rabi Oscillations
 

Summary: VOLUME 83, NUMBER 17 P H Y S I C A L R E V I E W L E T T E R S 25 OCTOBER 1999
Watching a Superfluid Untwist Itself: Recurrence of Rabi Oscillations
in a Bose-Einstein Condensate
M. R. Matthews, B. P. Anderson, P. C. Haljan, D. S. Hall, M. J. Holland,
J. E. Williams, 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 16 June 1999)
The order parameter of a condensate with two internal states can continuously distort in such a way
as to remove twists that have been imposed along its length. We observe this effect experimentally in
the collapse and recurrence of Rabi oscillations in a magnetically trapped, two-component Bose-Einstein
condensate of 87
Rb.
PACS numbers: 03.75.Fi, 42.50.Md, 67.57.Fg, 67.90.+z
Quantization and persistence of current in superconduc-
tors and superfluids can be understood in terms of the
topology of the order parameter. Current arises from a gra-
dient in the phase of the order parameter. Quantization of
flow around a closed path is a consequence of the require-
ment that the order parameter be single valued; metastabil-

  

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

 

Collections: Physics