Browsing by Author "Rodriguez, M."

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  • Laser probing of Cooper-paired trapped atoms
    (2001-09) Bruun, G. M.; Törmä, P.; Rodriguez, M.; Zoller, P.
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The observation of the predicted BCS state in gases of trapped atomic fermions poses a double challenge. A method based on the transfer of atomic population over a superconductor-normal state interface is presented to account for this. The interface is effectively created by using a laser to couple internal states with large and small scattering lengths.
  • Vortices in trapped superfluid fermi gases
    (2001-09-03) Rodriguez, M.; Paraoanu, G. S.; Törmä, P.
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The Ginzburg-Landau equation in a trapped geometry was used to define analytical estimates for the basic quantities describing a trapped superfluid Fermi gas. A striking difference to metallic superconductors was found in the temperature and system parameter dependence of the vortex core size/healing length. The results indicate that the effect of the confining geometry is essential for mesoscopic fermionic superfluids.