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

来源：

EUROPEAN PHYSICAL JOURNAL D | 2008年 / 50卷 / 01期

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

页码：13 / 19

页数：7

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