Measurements of Dipole Moments for the 5s5p^(3)P_(1)–5sns^(3)S_(1)Transitions via Autler–Townes Spectroscopy  

作　　者：Canzhu Tan Fachao Hu Zhijing Niu Yuhai Jiang Matthias Weidemüller Bing Zhu 

机构地区：[1]Hefei National Laboratory for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China [2]CAS Center For Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [3]Center for Transformative Science and School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [4]Physikalisches Institut,Universität Heidelberg,Im Neuenheimer Feld 226,69120 Heidelberg,Germany [5]HSBC Lab-China,Guangzhou 510620,China

出　　处：《Chinese Physics Letters》2022年第9期17-22,共6页中国物理快报（英文版）

基　　金：supported by the Anhui Initiative in Quantum Information Technologies;support from the National Natural Science Foundation of China(Grant No.11827806)。

摘　　要：We report on experimental measurements of the transition dipole moments(TDMs)between the intermediate state 5s5p^(3)P_(1)and the triplet Rydberg series 5sns^(3)S_(1)in an ultracold strontium gas.Here n is the principal quantum number ranging from 19 to 40.The transition 5s5p^(3)P_(1)–5sns^(3)S_(1)is coupled via an ultraviolet(UV)beam,inducing Autler–Townes splitting of both states.Such a splitting of the intermediate state is spectroscopically measured by using absorption imaging on a narrow transition 5s^(21)S_(0)–5s5p^(3)P_(1)in an ultracold gas of strontium atoms.The power and size of the UV beam are carefully determined,with which the TDMs are extracted from the measured Autler–Townes splitting.The experimentally obtained TDMs are compared to the calculations based on a parametric core potential,on a Coulomb potential with quantum defect,and on the open-source library Alkali Ryderg calculator,finding good agreement with the former two models and significant deviation with the latter.

关 键 词：QUANTUM SPLITTING TRANSITION 

分 类 号：O562[理学—原子与分子物理]