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

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Cited by in corpus (11)

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• Local observation of pair-condensation in a Fermi gas at unitarity
• Quantum corrections to the semiclassical collective dynamics in the Tavis-Cummings model
• Coherent reaction between molecular and atomic Bose-Einstein condensates: integrable model
• Pair formation in quenched unitary Bose gases
• Probing two Higgs oscillations in a one-dimensional Fermi superfluid with Raman-type spin-orbit coupling
• Dynamics of quantum quenching for BCS-BEC systems in the shallow BEC regime
• Slow-light probe of Fermi pairing through an atom-molecule dark state
• Nonadiabatic dissociation of molecular Bose-Einstein condensates: competition between chemical reactions
• Many-body dynamics of p-wave Feshbach molecule production: a mean-field approach
• Vortex lattice in spin-imbalanced unitary Fermi gas