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Paper detail

Efficient Production of Large 39K Bose-Einstein Condensates

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.

preprint2010arXivOpen access
Robert L. D. CampbellRobert P. SmithNaaman TammuzScott BeattieStuart MoulderZoran Hadzibabic
cond-mat.quant-gas
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Robert L. D. CampbellRobert P. SmithNaaman TammuzScott BeattieStuart MoulderZoran Hadzibabic

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