Phys. Rev. Lett. 89, 100401 (2002) [4 pages]Reaching Fermi Degeneracy in Two-Species Optical Dipole TrapsReceived 28 January 2002; published 14 August 2002 We propose the use of a combined optical dipole trap to achieve Fermi degeneracy by sympathetic cooling with a different bosonic species. Two far-detuned pairs of laser beams focused on the atomic clouds are used to confine the two atomic species with different trapping strengths. We show that a deep Fermi degeneracy regime can be potentially achieved earlier than Bose-Einstein condensation, as discussed in the favorable situation of a 6Li–23Na mixture. This opens up the possibility of experimentally investigating a mixture of superfluid Fermi and normal Bose gases. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.100401
DOI:
10.1103/PhysRevLett.89.100401
PACS:
05.30.Fk, 32.80.Pj, 67.60.–g, 67.57.–z
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