6533b829fe1ef96bd128a251
RESEARCH PRODUCT
Interacting Rubidium and Caesium Atoms
V. LeungC. WeberDieter MeschedeShincy JohnL. SteffensM. HaasA. RauschenbeutetD. Haubrichsubject
Condensed Matter::Quantum GasesSympathetic coolingMaterials sciencechemistry.chemical_elementRubidiumchemistryUltracold atomMagnetic trapLaser coolingCaesiumPhysics::Atomic and Molecular ClustersAtom opticsPhysics::Atomic PhysicsAtomic physicsHyperfine structuredescription
Binary mixtures of ultracold atoms are of great interest in the research field of quantum optics and are studied by several groups aiming at different applications. This paper works with rubidium and caesium, which are simultaneously stored in a magnetic trap. Species-selective microwave cooling is used on the rubidium groundstate hyperfine transition. Caesium is sympathetically cooled via elastic collisions with rubidium. When cooling down the mixture to temperatures below 1 muK, below 4 muK we observe strong losses of caesium. Analysing the dynamics of sympathetic cooling, lower limit for the modulus of the rubidium-caesium triplet s-wave scattering length is estimated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-06-01 | 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference |