Molecular Production in Two Component Atomic Fermi Gases

2004/09/30 by Jan Chwedeńczuk, Jan Chwedenczuk, Krzysztof Goral +4 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.other #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.93.260403

published as Phys. Rev. Lett. 93, 260403 (2004) · 4 pages, 3 eps figures; final version

arxiv created 2004/12/07 · openalex publication_date 2004/12/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We provide a practical approach to the molecular production via linear downward sweeps of Feshbach resonances in degenerate Fermi gases containing incoherent mixtures of two atomic spin states. We show that the efficiency of the association of atoms is determined just by the Landau-Zener parameter in addition to the density of the gas. Our approach of pairwise summation of the microscopic binary transition probabilities leads to an intuitive explanation for the observed saturation of the molecular production and recovers all atomic loss curves of Regal et al. [Nature (London) 427, 47 (2003))]] as well as Strecker et al. [Phys. Rev. Lett. 91, 080406 (2003))]] without adjustable parameters.

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• Nonlinear Adiabatic Passage from Fermion Atoms to Boson Molecules
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