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Fermions on atom chips

  • Extavour, Marcius H. T.
  • LeBlanc, Lindsay J.
  • McKeever, Jason
  • Bardon, Alma B.
  • Aubin, Seth
  • Myrskog, Stefan
  • Schumm, Thorsten
  • Thywissen, Joseph H.
Published Article
Publication Date
Mar 15, 2011
Submission Date
Nov 10, 2008
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We review our recent and ongoing work with Fermi gases on an atom chip. After reviewing some statistical and thermodynamic properties of the ideal, non-interacting Fermi gas, and a brief description of our atom chip and its capabilities, we discuss our experimental approach to producing a potassium-40 degenerate Fermi gas (DFG) using sympathetic cooling by a rubidium-87 Bose-Einstein condensate on an atom chip. In doing so, we describe the factors affecting the loading efficiency of the atom chip microtrap. This is followed by a discussion of species selectivity in radio frequency manipulation of the Bose-Fermi mixture, which we explore in the context of sympathetic evaporative cooling and radio-frequency dressed adiabatic double-well potentials. Next, we describe the incorporation of a crossed-beam dipole trap into the atom chip setup, in which we generate and manipulate strongly interacting spin mixtures of potassium-40. Finally, we conclude with a brief discussion of future research directions with DFGs and atom chips.

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