All-optical production of a degenerate Fermi gas

被引：235

作者：

Granade, SR ^{[1
]}

Gehm, ME ^{[1
]}

O'Hara, KM ^{[1
]}

Thomas, JE ^{[1
]}

机构：

[1] Duke Univ, Dept Phys, Durham, NC 27708 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.88.120405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We achieve degeneracy in a mixture of the two lowest hyperfine states of Li-6 by direct evaporation in a CO2 laser trap, yielding the first all optically produced degenerate Fermi gas. More than 10(5) atoms are confined at temperatures below 4 muK at full trap depth, where the Fermi temperature for each state is 8 muK. This degenerate two-component mixture is ideal for exploring mechanisms of superconductivity ranging from Cooper pairing to Bose-Einstein condensation of strongly bound pairs.

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