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 Li-6-Na-23 mixture. This opens up the possibility of experimentally investigating a mixture of superfluid Fermi and normal Bose gases.
Reaching Fermi degeneracy in two-speciesoptical dipole traps
ONOFRIO, ROBERTO;
2002
Abstract
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 Li-6-Na-23 mixture. This opens up the possibility of experimentally investigating a mixture of superfluid Fermi and normal Bose gases.File in questo prodotto:
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