An Optically Plugged Quadrupole Trap for Bose-Einstein Condensates

Details An Optically Plugged Quadrupole Trap for Bose-Einstein Condensates An Optically Plugged Quadrupole Trap for Bose-Einstein Condensates

2004-06-15

arxiv.org/abs/cond-mat/0406341v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevA.71.033617

We created sodium Bose-Einstein condensates in an optically plugged quadrupole magnetic trap (OPT). A focused, 532nm laser beam repelled atoms from the coil center where Majorana loss is significant. We produced condensates of up to $3 \times 10^7$ atoms, a factor of 60 improvement over previous work [1], a number comparable to the best all-magnetic traps, and transferred up to $9 \times 10^6$ atoms into a purely optical trap. Due to the tight axial confinement and azimuthal symmetry of the quadrupole coils, the OPT shows promise for creating Bose-Einstein condensates in a ring geometry.

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