A high phase-space density mixture of 87Rb and 133Cs: towards ultracold heteronuclear molecules
A high phase-space density mixture of 87Rb and 133Cs: towards ultracold heteronuclear molecules
复制标题
87Rb 和 133Cs 的高相空间密度混合物:面向超冷异核分子
DOI:
10.1140/epjd/e2011-10716-1
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Cho H
中科院分区:
文献类型:
--
作者:
Cho H
We report the production of a high phase-space density mixture of87Rb and133Cs atoms in a levitated crossed optical dipole trap as the first step towards the creation of ultracold RbCs molecules via magneto-association. We present a simple and robust experimental setup designed for the sympathetic cooling of133Cs via interspecies elastic collisions with87Rb. Working with the |F= 1,mF= +1> and the |3, +3> states of87Rb and133Cs respectively, we measure a high interspecies three-body inelastic collision rate ∼10−25−10−26cm6s−1which hinders the sympathetic cooling. Nevertheless by careful tailoring of the evaporation we can produce phase-space densities near quantum degeneracy for both species simultaneously. In addition we report the observation of an interspecies Feshbach resonance at 181.7(5) G and demonstrate the creation of Cs2molecules via magneto-association on the 4(g)4 resonance at 19.8 G. These results represent important steps towards the creation of ultracold RbCs molecules in our apparatus.
影响因子:
19.6
作者:
Danzl, Johann G.;Mark, Manfred J.;Naegerl, Hanns-Christoph
通讯作者:
Naegerl, Hanns-Christoph
DOI:
10.48550/arxiv.1104.0495
发表时间:
2011
期刊:
--
影响因子:
--
作者:
Jenkin D
通讯作者:
Jenkin D