Magnetically tunable atom-exchange process involving ultracold weakly bound Feshbach molecules  

作　　者：Jue Nan Bo Zhao 

机构地区：[1]Hefei National Laboratory for Physical Sciences at Microscale and Deparment of Modern Physics,University of Science and Technology of China,Hefei 230026,China [2]Shanghai Branch,CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai 201315,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2020年第5期31-38,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2018YFA0306502);the National Natural Science Foundation of China(Grant No.11521063)。

摘　　要：Chemical reactions at ultracold temperatures have attracted great interest in recent years. The atom-exchange reaction between an atom and a weakly bound Feshbach molecule near overlapping Feshbach resonances presents a simple and ideal example of the controlled ultracold chemistry. The energy released in the reaction can be tuned to be very small and thus the reaction products can be trapped and detected, allowing the study of state-to-state reaction dynamics. The reaction can be tuned from the exothermic regime to the endothermic regime, which allows to study the threshold behavior of an endothermic reaction. In this paper, we review the recent progress in studying the atom-exchange reaction involving Feshbach molecules in ultracold atomic gases.Chemical reactions at ultracold temperatures have attracted great interest in recent years. The atom-exchange reaction between an atom and a weakly bound Feshbach molecule near overlapping Feshbach resonances presents a simple and ideal example of the controlled ultracold chemistry. The energy released in the reaction can be tuned to be very small and thus the reaction products can be trapped and detected, allowing the study of state-to-state reaction dynamics. The reaction can be tuned from the exothermic regime to the endothermic regime, which allows to study the threshold behavior of an endothermic reaction. In this paper, we review the recent progress in studying the atom-exchange reaction involving Feshbach molecules in ultracold atomic gases.

关 键 词：FESHBACH molecule atom-exchange PROCESS ULTRACOLD collision 

分 类 号：O56[理学—原子与分子物理]