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Phys. Rev. Lett. 91, 160401 (2003) [4 pages]

Fiftyfold Improvement in the Number of Quantum Degenerate Fermionic Atoms

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Z. Hadzibabic, S. Gupta, C. A. Stan, C. H. Schunck, M. W. Zwierlein, K. Dieckmann, and W. Ketterle
Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, MIT, Cambridge, Massachusetts 02139, USA

Received 2 June 2003; published 16 October 2003

We have produced a quantum degenerate 6Li Fermi gas with up to 7×107 atoms, an improvement by a factor of 50 over all previous experiments with degenerate Fermi gases. This was achieved by sympathetic cooling with bosonic 23Na in the F=2, upper hyperfine ground state. We have also achieved Bose-Einstein condensation of F=2 sodium atoms by direct evaporation.


©2003 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.91.160401
DOI: 10.1103/PhysRevLett.91.160401
PACS: 05.30.Fk, 32.80.Pj, 39.25.+k, 67.60.–g

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