Cross-Molecular Coupling in Combined Photoassociation and Feshbach Resonances
arXiv:0804.3011 · doi:10.1103/PhysRevLett.101.040401
Abstract
We model combined photoassociation and Feshbach resonances in a Bose-Einstein condensate. When the magnetic field is far-off resonance, cross coupling between the two target molecules--enabled by the shared dissociation continuum--leads to an anomalous dispersive shift in the position of laser resonance, as well as unprecedented elimination and enhancement of resonant photoassociation via quantum interference. For off-resonant lasers, a dispersive shift and quantum interference appear similarly in resonant three-body Feshbach losses, except that the Feshbach node is tunable with intensity.
arXiv comment4 pages, 2 figs, 22+ refs; v2 improved abstract, refined discussion of exptl motivation, improved word choice in discussion of future work; to appear in Phys. Rev. Lett
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- Combination of a magnetic Feshbach resonance and an optical bound-to-bound transition
- Feshbach Resonance Induced Fano Interference in Photoassociation
- Magneto-optical Feshbach resonance: Controlling cold collision with quantum interference
- Resonant enhancement of ultracold photoassociation rate by electric field induced anisotropic interaction
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- Probing Energy-Dependent Feshbach Resonances by Optical Control
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- Coherent bimolecular reactions with quantum-degenerate matter waves
- Quantum Effects at Low Energy Atom-Molecule Interface
- Many-Body Rate Limit on Photoassociation of a Bose-Einstein Condensate
- Creating a Quantum Degenerate Gas of Stable Molecules via Weak Photoassociation