Large ^87Rb Bose-Einstein Condensate in a Magnetic TOP Trap

Brian P. Anderson, Mark A. Kasevich

D. L. Jenkin, D. J. McCarron, M. P. Köppinger +3 more

Ph. W. Courteille, Dian-Jiun Han, R. H. Wynar +1 more

We report Bose-Einstein condensation of large numbers of 87Rb atoms in a magnetic time-averaged potential trap. Over 1.5 X 109 atoms, initially captured in the TOP trap, are evaporatively cooled down to temperatures near 100 nK. Condensates of up to 2 X 105 atoms at peak densities higher than 1014 cm-3 are observed.

D. J. Han, R. H. Wynar, Ph. W. Courteille +1 more

We have observed Bose-Einstein condensation of large numbers of ${}^{87}\mathrm{Rb}$ atoms in a magnetic time-averaged orbiting potential (TOP) trap. Over $1.5\ifmmode\times\else\texttimes\fi{}{10}^{9}$ atoms are captured in the trap and evaporatively cooled to produce condensates containing up to $2\ifmmode\times\else\texttimes\fi{}{10}^{5}$ atoms. We discuss special considerations relating to the production of large Bose-Einstein condensates in a TOP trap, and present measurements of the condensate fraction for this case.

Dian-Jiun Han

J. R. Ensher, Deborah Jin, Michael Matthews +1 more