Efficient Production of Large 39K Bose-Einstein Condensates

Details Efficient Production of Large 39K Bose-Einstein Condensates Efficient Production of Large 39K Bose-Einstein Condensates

2010-10-18

arxiv.org/abs/1010.3739v2

Phys. Rev. A 82, 063611 (2010)

Physics

Condensed Matter

Quantum Gases

7 pages, 5 figures; figure font compatibility improved

Scientific paper

10.1103/PhysRevA.82.063611

We describe an experimental setup and the cooling procedure for producing 39K Bose-Einstein condensates of over 4x10^5 atoms. Condensation is achieved via a combination of sympathetic cooling with 87Rb in a quadrupole-Ioffe-configuration (QUIC) magnetic trap, and direct evaporation in a large volume crossed optical dipole trap, where we exploit the broad Feshbach resonance at 402 G to tune the 39K interactions from weak and attractive to strong and repulsive. In the same apparatus we create quasi-pure 87Rb condensates of over 8x10^5 atoms.

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