All-Optical Production of a Degenerate Fermi Gas

Details All-Optical Production of a Degenerate Fermi Gas All-Optical Production of a Degenerate Fermi Gas

2001-11-19

arxiv.org/abs/cond-mat/0111344v3

Physics

Condensed Matter

Soft Condensed Matter

4 pgs RevTeX with 2 eps figs, to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.88.120405

We achieve degeneracy in a mixture of the two lowest hyperfine states of $^6$Li by direct evaporation in a CO$_2$ laser trap, yielding the first all-optically produced degenerate Fermi gas. More than $10^5$ atoms are confined at temperatures below $4 \mu$K at full trap depth, where the Fermi temperature for each state is $8 \mu$K. This degenerate two-component mixture is ideal for exploring mechanisms of superconductivity ranging from Cooper pairing to Bose condensation of strongly bound pairs.

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