Quantum degeneracy in a fermionic atom gas

B. DeMarco, D. Jin

Research output: Contribution to conferencePaperpeer-review


Magnetic trapping and evaporative cooling were used to cool a million 40K atoms below the Fermi temperature. Simultaneous evaporation of spin-mixed samples was used to overcome the lack of s-wave collisions between spin-polarized fermionic atoms at these ultralow temperatures. By releasing the gas from the magnetic trap and allowing it to expand, the energy and momentum distributions of this quantum degenerate were measured. Consistent with Fermi-Dirac (FD) quantum statistics, the total energy in the gas was higher than the classical expectation at the same temperature. Further, the momentum distribution was non-gaussian (non-classical) and also congruent with FD statistics.

Original languageEnglish (US)
Number of pages1
StatePublished - 2000
Externally publishedYes
EventQuantum Electronics and Laser Science Conference (QELS 2000) - San Francisco, CA, USA
Duration: May 7 2000May 12 2000


OtherQuantum Electronics and Laser Science Conference (QELS 2000)
CitySan Francisco, CA, USA

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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