Lifetime Measurements of the 4f(sup 14)5d Metastable States in Single Ytterbium Ions
Lifetime Measurements of the 4f(sup 14)5d Metastable States in Single Ytterbium Ions
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单镱离子 4f(sup 14)5d 亚稳态的寿命测量
DOI：
10.1103/physreva.61.022507
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发表时间：
2000
影响因子：
2.9
通讯作者：
N. Lu
中科院分区：
文献类型：
--
作者：
L. Maleki;N. Lu
Yb离子具有丰富的低激发态能级结构，是囚禁离子实验中应用最广泛的离子之一。我们利用限制在射频陷阱中的单个Yb离子测量了两个${4f}^{14}5d$亚稳态的辐射寿命。得到了${D}_{3/2}$和${D}_{5/2}$态的寿命分别为52.7(2.4)和7.0(0.4)ms。计算结果与以前的实测值吻合较好，但与理论估计值相差较大。实验还得到了${P}_{1/2}$分支到${D}_{3/2}$的比例为0.0483，不确定度为9%。
The ytterbium ion has a rich level structure of low-lying states, and is one of the most widely used in experiments with trapped ions. We have measured the radiative lifetimes for the two ${4f}^{14}5d$ metastable states using single ytterbium ions confined in a rf trap. The obtained lifetimes for ${D}_{3/2}$ and ${D}_{5/2}$ states are 52.7(2.4) and 7.0(0.4) ms, respectively. The results are in good agreement with previously measured values, but differ significantly from theoretical estimates. The ${P}_{1/2}$ branching ratio into ${D}_{3/2}$ has also been obtained from the experiment to be 0.0483 with a 9% uncertainty.