Dynamics of Single Neutral Impurity Atoms Immersed in an Ultracold Gas

被引：174

作者：

Spethmann, Nicolas ^{[1
,2
,3
]}

Kindermann, Farina ^{[1
,2
,3
]}

John, Shincy ^{[1
]}

Weber, Claudia ^{[1
]}

Meschede, Dieter ^{[1
]}

Widera, Artur ^{[2
,3
]}

机构：

[1] Univ Bonn, Inst Angew Phys, D-53115 Bonn, Germany

[2] Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

[3] Univ Kaiserslautern, Landesforschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 23期

关键词：

QUANTUM GAS;

D O I：

10.1103/PhysRevLett.109.235301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on controlled doping of an ultracold Rb gas with single neutral Cs impurity atoms. Elastic two-body collisions lead to a rapid thermalization of the impurity inside the Rb gas, representing the first realization of an ultracold gas doped with a precisely known number of impurity atoms interacting via s-wave collisions. Inelastic interactions are restricted to a single three-body recombination channel in a highly controlled and pure setting, which allows us to determine the Rb-Rb-Cs three-body loss rate with unprecedented precision. Our results pave the way for a coherently interacting hybrid system of individually controllable impurities in a quantum many-body system. DOI: 10.1103/PhysRevLett.109.235301

引用

页数：5

共 37 条

[31] Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and the coupled-channel model [J].