Ling, HY , E China Normal Univ, Key Lab Opt & Magnet Resonance Spect, Minist Educ, Dept Phys, Shanghai 200062, Peoples R China
部门归属:
E China Normal Univ, Key Lab Opt & Magnet Resonance Spect, Minist Educ, Dept Phys, Shanghai 200062, Peoples R China; Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA; Rice Univ, Rice Quantum Inst, Houston, TX 77251 USA; Rowan Coll, Dept Phys & Astron, Glassboro, NJ 08028 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
We consider a Raman photoassociation model in a field configuration in which a Gaussian and a first-order Laguerre Gaussian laser field are applied between the bound-bound and free-bound transitions, respectively. We show that such a configuration can lead to a coherent population trapping superposition of an atomic condensate and a ground molecular vortex of unit winding number. We develop stimulated Raman adiabatic passages that minimize the effect of mean-field shifts due to collisions, for optimal conversion of an atomic condensate into a ground molecular vortex.
