Fluctuations in the formation time of ultracold dimers from fermionic atoms

H. Uys, T. Miyakawa, D. Meiser, P. Meystre

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9 Scopus citations

Abstract

We investigate the temporal fluctuations characteristic of the formation of molecular dimers from ultracold fermionic atoms via Raman photoassociation. The quantum fluctuations inherent to the initial atomic state result in large fluctuations in the passage time from atoms to molecules. Assuming degeneracy of kinetic energies of atoms in the strong coupling limit, we find that a heuristic classical stochastic model yields qualitative agreement with the full quantum treatment in the initial stages of the dynamics. We also show that in contrast to the association of atoms into dimers, the reverse process of dissociation from a condensate of bosonic dimers exhibits little passage time fluctuations. Finally, we explore effects due to the nondegeneracy of atomic kinetic energies.

Original languageEnglish (US)
Article number053616
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume72
Issue number5
DOIs
StatePublished - Nov 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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