Stable, strongly attractive, two-state mixture of lithium fermions in an optical trap

Journal Article (Journal Article)

We use an all-optical trap to confine a strongly attractive two-state mixture of lithium fermions. By measuring the rate of evaporation from the trap, we determine the effective elastic scattering cross section 4pia(2) to show that the magnitude of the scattering length |a| is very large, in agreement with predictions. We show that the mixture is stable against inelastic decay provided that a small bias magnetic field is applied. For this system, the s-wave interaction is widely tunable at low magnetic field, and can be turned on and off rapidly via a Raman pi pulse. Hence, this mixture is well suited for fundamental studies of an interacting Fermi gas.

Full Text

Duke Authors

Cited Authors

  • O'Hara, KM; Gehm, ME; Granade, SR; Bali, S; Thomas, JE

Published Date

  • September 2000

Published In

Volume / Issue

  • 85 / 10

Start / End Page

  • 2092 - 2095

PubMed ID

  • 10970470

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.85.2092


  • eng