Precision measurement of the branching fractions of the 4p 2P3/2 decay of Ca II

被引:43
作者
Gerritsma, R. [1 ]
Kirchmair, G. [1 ,2 ]
Zaehringer, F. [1 ,2 ]
Benhelm, J. [1 ,2 ]
Blatt, R. [1 ,2 ]
Roos, C. F. [1 ,2 ]
机构
[1] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria
[2] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria
关键词
D O I
10.1140/epjd/e2008-00196-9
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We perform precision measurements of the branching ratios of the 4p P-2(3/2) level decay of a single Ca-40(+) ion suspended in a linear Paul trap. High precision is achieved by a novel technique based on monitoring the population transfer when repeatedly pumping the ion between different internal states. The branching fractions into the 4s S-2(1/2), 3d D-2(5/2) and 3d D-2(3/2) levels are found to be 0.9347(3), 0.0587(2) and 0.00661(4), respectively. For the branching ratio A(P-3/2-S-1/2)/Sigma(J) A(P-3/2-D-J) = 14.31(5), we find a forty-fold improvement in accuracy as compared to the best previous measurement.
引用
收藏
页码:13 / 19
页数:7
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