Probing Fermionic Condensates by Fast-Sweep Projection onto Feshbach Molecules

Abstract

Fast sweep projection onto Feshbach molecules has been widely used as a probe of fermionic condensates. By determining the exact dynamics of a pair of atoms in time varying magnetic fields, we calculate the number of condensed and noncondensed molecules created after fast magnetic field sweeps from the BCS to the BEC side of the resonances in ${}^{40}$K and ${}^6$Li, for different sweep rates and a range of initial and final fields. We discuss the relation between the initial fermionic condensate fraction and the molecular condensate fraction measured after the sweep.

4 pages, 3 figures, revised version

References in corpus (3)

• Nonequilibrium dynamics and thermodynamics of a degenerate Fermi gas across a Feshbach resonance
• Adiabatic association of ultracold molecules via magnetic field tunable interactions
• Extracting the condensate density from projection experiments with Fermi gases

Cited by in corpus (1)

• Quantum corrections to the semiclassical collective dynamics in the Tavis-Cummings model