Degenerate Fermi Gases of Ytterbium

Takeshi Fukuhara, Yosuke Takasu, Mitsutaka Kumakura, and Yoshiro Takahashi
Phys. Rev. Lett. 98, 030401 – Published 17 January 2007

Abstract

Evaporative cooling was performed to cool fermionic Yb173 atoms in a crossed optical dipole trap. The large elastic collision rate leads to efficient evaporation and we have successfully cooled the atoms to 0.37±0.06 of the Fermi temperature, that is to say, to a quantum degenerate regime. In this regime, a plunge of evaporation efficiency was observed as a result of Fermi degeneracy.

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  • Received 8 July 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.030401

©2007 American Physical Society

Authors & Affiliations

Takeshi Fukuhara1, Yosuke Takasu2, Mitsutaka Kumakura1,3,4, and Yoshiro Takahashi1,3

  • 1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
  • 2Department of Electronic Science and Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
  • 3CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
  • 4PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

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Issue

Vol. 98, Iss. 3 — 19 January 2007

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