Shortcut to a Fermi-Degenerate Gas of Molecules via Cooperative Association
arXiv:physics/0304012 · doi:10.1103/PhysRevLett.91.210404
Abstract
We theoretically examine the creation of a Fermi-degenerate gas of molecules via a photoassociation or Feshbach resonance applied to a degenerate Bose-Fermi mixture of atoms. This problem raises an interest because, unlike bosons, fermions in general do not behave cooperatively, so that the collective conversion of, say, two million atoms into one million molecules is not to be expected. Nevertheless, we find that the coupled Fermi system displays collective Rabi-like oscillations and adiabatic passage between atoms and molecules, thereby mimicking Bose-Einstein statistics. Cooperative association of a degenerate mixture of Bose and Fermi gases could therefore serve as a shortcut to a degenerate gas of Fermi molecules.
4 pages, 2 figures, submitted to PRL; v2: expanded intro, added discussion on neglect of collisions and when mimicking should occur
References in corpus (5)
- Creation of ultracold molecules from a Fermi gas of atoms
- Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas
- Magnetic control of the interaction in ultracold K-Rb mixtures
- Formation of a molecular Bose-Einstein condensate and an entangled atomic gas by Feshbach resonance
- Saturation in heteronuclear photoassociation of 6Li7Li
Cited by in corpus (9)
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- Full counting statistics of heteronuclear molecules from Feshbach-assisted photo association
- Photoassociation dynamics in a Bose-Einstein condensate
- Raman Photoassociation of Bose-Fermi Mixtures and the Subsequent Prospects for Atom-Molecule Cooper Pairing
- Boson-like quantum dynamics of association in ultracold Fermi gases
- New Directions in Degenerate Dipolar Molecules via Collective Association
- Ultracold Fermion Cooling Cycle using Heteronuclear Feshbach Resonances
- Coherent bimolecular reactions with quantum-degenerate matter waves