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Published Online October 18, 2001
Science DOI: 10.1126/science.1066687

Reports

Submitted on October 1, 2001
Accepted on October 11, 2001

Bose-Einstein Condensation of Potassium Atoms by Sympathetic Cooling

G. Modugno 1, G. Ferrari 1, G. Roati 1, R. J. Brecha 1, A. Simoni 1, M. Inguscio 1

1 European Laboratory for Nonlinear Spectroscopy (LENS), Università di Firenze, and Istituto Nazionale per la Fisica della Materia (INFM), Largo Enrico Fermi 2, 50125 Firenze, Italy.

We report on the Bose-Einstein condensation of potassium atoms, whereby quantum degeneracy is achieved by sympathetic cooling with evaporatively-cooled rubidium. Due to the rapid thermalization of the two different atoms, the efficiency of the cooling process is high. The ability to achieve condensation by sympathetic cooling with a different species may provide a route to the production of degenerate systems with a larger choice of components.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)