Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture

被引：0

作者：

Rui, Jun ^{[1
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Yang, Huan ^{[1
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Liu, Lan ^{[1
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Zhang, De-Chao ^{[1
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]}

Liu, Ya-Xiong ^{[1
,2
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]}

Nan, Jue ^{[1
,2
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]}

Chen, Yu-Ao ^{[1
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]}

Zhao, Bo ^{[1
,2
,3
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]}

Pan, Jian-Wei ^{[1
,2
,3
,4
,5
]}

机构：

[1] Univ Sci & Technol China, Shanghai Branch, Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, CAS Ctr Excellence, Shanghai 201315, Peoples R China

[4] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Shanghai 201315, Peoples R China

[5] CAS Alibaba Quantum Comp Lab, Shanghai 201315, Peoples R China

来源：

NATURE PHYSICS | 2017年 / 13卷 / 07期

基金：

中国国家自然科学基金;

关键词：

MOLECULES; COLLISIONS;

D O I：

10.1038/NPHYS4095

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultracold molecules offer remarkable opportunities for the study of chemical reactions close to zero temperature. Although significant progress has been achieved in exploring ultracold bimolecular reactions, the investigations are usually limited to measurements of the overall loss rates of the reactants. Detection of the reaction products will improve our understanding of the reaction mechanism and provide a unique opportunity to study the state-to-state reaction dynamics. Here we report on the direct observation of an exoergic atom-exchange reaction in an ultracold atom-dimer mixture. Both the atom and molecule products are observed and the state-to-state reaction rate coeffcient is measured. By changing the magnetic field, the reaction can be switched on or off, and the rate coeffcient can be controlled. The observed atom-exchange reaction is an effective spin-exchange interaction between the dimer and the atom and may be exploited to study the Kondo effect with ultracold atoms.

引用

页码：699 / +

页数：6

共 32 条

[1] Realizing a Kondo-Correlated State with Ultracold Atoms [J].