Creating Ground State Molecules with Optical Feshbach Resonances in Tight Traps

Abstract

We propose to create ultracold ground state molecules in an atomic Bose-Einstein condensate by adiabatic crossing of an optical Feshbach resonance. We envision a scheme where the laser intensity and possibly also frequency are linearly ramped over the resonance. Our calculations for ${}^{87}$Rb show that for sufficiently tight traps it is possible to avoid spontaneous emission while retaining adiabaticity, and conversion efficiencies of up to 50% can be expected.

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• Atom-molecule collisions in an optically trapped gas
• Molecule formation in ultracold atomic gases
• Short-pulse photoassociation in rubidium below the D${}_1$ line
• Photoassociation and coherent transient dynamics in the interaction of ultracold rubidium atoms with shaped femtosecond pulses - II. Theory
• Photoassociation and optical Feshbach resonances in an atomic Bose-Einstein condensate: treatment of correlation effects
• Exploring classically chaotic potentials with a matter wave quantum probe
• Perspectives for coherent optical formation of strontium molecules in their electronic ground state
• Influence of a tight isotropic harmonic trap on photoassociation in ultracold homonuclear alkali gases
• A high-flux source system for matter-wave interferometry exploiting tunable interactions
• Pump-probe spectroscopy of two-body correlations in ultracold gases
• Robust field-dressed spectra of diatomics in an optical lattice