铟离子5s^21S0-5s5p^3P0参考用跃迁频率的精密测量  

Absolute Frequency Measurements of the Clock Transition 5s^(21)S_0-5s5p^3P_0 in Singly Ionized Indium

作　　者：王延辉[1,2] 刘涛 A.Stejskal 赵燕宁 R.Dumke 张洁 陆泽晃 王力军[1,2] 董太乾[1] 

机构地区：[1]北京大学信息科学技术学院,量子信息与测量教育部重点实验室,北京100871 [2]Max-Planck Research Group,Institute of Optics, Information and Photonies, University Erlangen-Nuremberg, Erlangen Germany 91058 [3]Nanyang Technolog,cal University, Singapore 63761

出　　处：《北京大学学报（自然科学版）》2008年第4期549-553,共5页Acta Scientiarum Naturalium Universitatis Pekinensis

摘　　要：报道了建立铟单离子(115In+)光频标实验系统的实验进展。单个离子囚禁在Paul-Straubel型离子阱中,利用激光边带冷却技术将其冷却至最低振动能态。为了探测和测量铟离子参考用跃迁5s21S0-5s5p3P0的频率,使用一台Hz量级超窄线宽激光作为探测激光,用以获得量子跳跃信号。用一台以商用铯原子钟为基准的飞秒光频梳作为测量工具,对其频率进行了20次的精密测量,相对不确定度为5.0×10-14。The authors report on the current status of the optical frequency standard based on a single ^115 In ^＋ ion. A single Indium ion is trapped in a Paul-Straubel type trap and cooled by sideband cooling to its lowest vibrational states. To interrogate the 5s^21 So-5s5p^3Po clock transition with high accuracy, the authors demonstrate a Hz-level level laser system resonant to this transition. The Absolute frequency measurement is performed with the help of a femtosecond laser referenced to a commercial cesium atomic clock. 20 sessions measurements are achieved. The relative fractional uncertainty is 5.0×10^-14.

关 键 词：单离子 绝对频率测量 飞秒光频梳 

分 类 号：TH74[机械工程—光学工程]