Reaching Fermi degeneracy in two-species optical dipole traps

Details Reaching Fermi degeneracy in two-species optical dipole traps Reaching Fermi degeneracy in two-species optical dipole traps

2002-01-29

arxiv.org/abs/cond-mat/0201537v2

Phys. Rev. Lett. 89, 100401 (2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.89.100401

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--^{23}Na mixture. This opens up the possibility of experimentally investigating a mixture of superfluid Fermi and normal Bose gases.

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