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arXiv 1104.4430physics.atom-phcond-mat.quant-gas
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碱金属和类碱土金属原子的量子简并混合

Quantum degenerate mixtures of alkali and alkaline-earth-like atoms

Hideaki Hara, Yosuke Takasu, Yoshifumi Yamaoka, John M. Doyle, Yoshiro Takahashi

摘要:

我们实现了由碱金属和碱土金属原子Li和Yb组成的混合物的同时量子简并。这是在光阱中通过费米同位素6Li与蒸发冷却的玻色子174 Yb和单独的费米173 Yb的共振冷却来实现的。使用交叉热化研究,我们还测量了两种Li-Yb组合的弹性s波散射长度,|a6Li-174Yb| = 1.0 \pm 0.2 nm和|a6Li-173Yb| = 0.9 \pm 0.2 nm。这些长度的平等被认为是一致的质量缩放分析。Li和Yb的量子简并混合物,如这里所实现的,可以是创建具有电子自旋自由度的超冷分子,研究新型Efimov三聚体和超流体系统的杂质探针的基础。

英文摘要:

We realize simultaneous quantum degeneracy in mixtures consisting of the alkali and alkalineearth-like atoms Li and Yb. This is accomplished within an optical trap by sympathetic cooling of the fermionic isotope 6Li with evaporatively cooled bosonic 174Yb and, separately, fermionic 173Yb.Using cross-thermalization studies, we also measure the elastic s-wave scattering lengths of both Li-Yb combinations, |a6Li-174Yb| = 1.0\pm0.2 nm and |a6Li-173Yb| = 0.9\pm0.2 nm. The equality of these lengths is found to be consistent with mass-scaling analysis. The quantum degenerate mixtures of Li and Yb, as realized here, can be the basis for creation of ultracold molecules with electron spin degrees of freedom, studies of novel Efimov trimers, and impurity probes of superfluid systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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