Bose-Einstein Condensation of Potassium Atoms by Sympathetic Cooling

doi:10.1126/science.1066687

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Originally published in Science Express on 18 October 2001
Science 9 November 2001:
Vol. 294. no. 5545, pp. 1320 - 1322
DOI: 10.1126/science.1066687

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Bose-Einstein Condensation of Potassium Atoms by Sympathetic Cooling

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

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

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.

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