超冷nS Rydberg原子的态转移  

State transfer of ultracold nS Rydberg atoms

作　　者：王勇[1] 张好[1] 陈杰[1] 王丽梅[1] 张临杰[1] 李昌勇[1] 赵建明[1] 贾锁堂[1] 

机构地区：[1]量子光学与光量子器件国家重点实验室山西大学激光光谱实验室,太原030006

出　　处：《物理学报》2013年第9期104-108,共5页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号: 2012CB921603);国家国际科技合作专项(2011DFA12490);国家自然科学基金(批准号: 11274209,10934004, 60978018, 61078001);国家基础科学人才培养基金(批准号: J1103210);山西省自然科学基金(批准号: 2012011003-2)资助的课题~~

摘　　要：本文从实验上研究了超冷 nS Rydberg 原子在外电场脉冲作用下的态转移现象. 采用双光子激发超冷基态原子制备超冷Rydberg原子,通过脉冲场电离法探测超冷Rydberg原子的离子信号,实验研究了由外加脉冲电场产生的nS 能级和多重态的避免交叉, 获得了在外电场脉冲作用下 nS 态原子的态转移现象, 实验与理论计算的结果相一致.The state transfer of nS Rydberg atoms induced by external pulsed electric field has been investigated. Cold nS Rydberg atoms are prepared by the two-photon transition and the selective field-ionization method is used to detect the Rydberg atoms and ＂P＂ state due to the state mixing. The avoided crossing of nS and （n 4） manifold is studied and the dependence of the state transfer rate on the strength of pulsed field is obtained. Experimental result is interpreted by using Stark effect of electric field and it shows consistency between experiment and calculation.

关 键 词：RYDBERG原子 态转移 能级避免交叉 

分 类 号：O562[理学—原子与分子物理]