Spatial separation in a thermal mixture of ultracold 174Yb and 87Rb atoms

被引：37

作者：

Baumer, F. ^{[1
]}

Muenchow, F. ^{[1
]}

Goerlitz, A. ^{[1
]}

Maxwell, S. E. ^{[2
,3
]}

Julienne, P. S. ^{[2
,3
]}

Tiesinga, E. ^{[2
,3
]}

机构：

[1] Univ Dusseldorf, Inst Expt Phys, DE-40225 Dusseldorf, Germany

[2] Joint Quantum Inst, Gaithersburg, MD 20899 USA

[3] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW A | 2011年 / 83卷 / 04期

关键词：

FESHBACH RESONANCES; RECOMBINATION; COLLISIONS;

D O I：

10.1103/PhysRevA.83.040702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the observation of unusually strong interactions in a thermal mixture of ultracold atoms which cause a significant modification of the spatial distribution. A mixture of Rb-87 and Yb-174 with a temperature of a few mu K is prepared in a hybrid trap consisting of a bichromatic optical potential superimposed on a magnetic trap. For suitable trap parameters and temperatures, a spatial separation of the two species is observed. We infer that the separation is driven by a large interaction strength between Yb-174 and Rb-87 accompanied by a large three-body recombination rate. Based on this assumption we have developed a diffusion model which reproduces our observations.

引用

页数：4

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