Dissociation of Feshbach Molecules into Different Partial Waves

Abstract

Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable conditions, more than one outgoing partial wave can be populated. A theoretical model for this process is discussed here in detail. The model reveals the connection between the dissociation and the theory of multichannel scattering resonances. In particular, the decay rate, the branching ratio, and the relative phase between the partial waves can be predicted from theory or extracted from experiment. The results are applicable to our recent experiment in 87Rb, which has a d-wave shape resonance.

Added Refs.[32-38]

References in corpus (22)

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Cited by in corpus (17)

• Many-Body Physics with Ultracold Gases
• Production of cold molecules via magnetically tunable Feshbach resonances
• Lieb-Liniger model of a dissipation-induced Tonks-Girardeau gas
• First-principles quantum simulations of dissociation of molecular condensates: Atom correlations in momentum space
• Spectroscopy of Strong-Pulse Superradiance in a Bose-Einstein condensate
• Metastable Feshbach Molecules in High Rotational States
• Pairing mean-field theory for the dynamics of dissociation of molecular Bose-Einstein condensates
• Role of spatial inhomogeneity in dissociation of trapped molecular condensates
• A New Look at the Quantum Mechanics of the Harmonic Oscillator
• Above threshold scattering about a Feshbach resonance for ultracold atoms in an optical collider
• Molecular Feshbach dissociation as a source for motionally entangled atoms
• Experimental observation of the avoided crossing of two $S$-matrix resonance poles in an ultracold atom collider
• Classification of zero-energy resonances by dissociation of Feshbach molecules
• Enhanced coupling of electron and nuclear spins by quantum tunneling resonances
• Three-State Feshbach Resonances Mediated By Second-Order Couplings
• Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas collision
• Observing S-Matrix Pole Flow in Resonance Interplay: Cold Collisions of Ultracold Atoms in a Miniature Laser-based Accelerator