Controlling a magnetic Feshbach resonance with laser light
arXiv:0902.2151 · doi:10.1038/NPHYS1232
Abstract
The capability to tune the strength of the elastic interparticle interaction is crucial for many experiments with ultracold gases. Magnetic Feshbach resonances are a tool widely used for this purpose, but future experiments would benefit from additional flexibility such as spatial modulation of the interaction strength on short length scales. Optical Feshbach resonances offer this possibility in principle, but suffer from fast particle loss due to light-induced inelastic collisions. Here we show that light near-resonant with a molecular bound-to-bound transition can be used to shift the magnetic field at which a magnetic Feshbach resonance occurs. This makes it possible to tune the interaction strength with laser light and at the same time induce considerably less loss than an optical Feshbach resonance would do.
References in corpus (8)
- Tuning the scattering length with an optically induced Feshbach resonance
- Feshbach resonances in rubidium 87: Precision measurement and analysis
- Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates
- Observation of molecules produced from a Bose-Einstein condensate
- Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance
- Characterization of elastic scattering near a Feshbach resonance in rubidium 87
- Dissociation of ultracold molecules with Feshbach resonances
- Cross-Molecular Coupling in Combined Photoassociation and Feshbach Resonances