Direct measurement of the 3d2D3/2 to 3d2D5/2 lifetime ratio in a single trapped 40Ca+
文献类型：期刊论文
| 作者 | Guan,H2,3; Shao,H1,2,3; Huang,Y2,3; Gao,K2,3 |
| 刊名 | Journal of Physics B: Atomic, Molecular and Optical Physics
 |
| 出版日期 | 2018-01-22 |
| 卷号 | 51期号:4 |
| 关键词 | single ion quantum jump lifetime ratio |
| ISSN号 | 0953-4075 |
| DOI | 10.1088/1361-6455/aaa191 |
| 英文摘要 | Abstract We present for the first time a direct measurement of the lifetime ratio between the 3 d 2 D 3 / 2 and 3 d 2 D 5 / 2 metastable states in a single trapped 40Ca+. A high-efficiency quantum state detection technique is adopted to monitor the quantum jumps, and a high precision and synchronized measurement sequence is used for laser control to study the rule of spontaneous decay. Our method shows that the lifetime ratio is a constant and is irrelevant to the dwell time; it is only determined by the spontaneous decay probabilities of the two metastable states at one random decay time, independent of the lifetimes of the two metastable states. Systematic errors such as collisions with background gases, heating effects, impurity components, the shelving and pumping rates and the photon counts are analyzed, and the lifetime ratio between the 3 d 2 D 3 / 2 and 3 d 2 D 5 / 2 states is directly measured to be 1.0257(43) with an uncertainty of 0.42%. Our result is in good agreement with the most precise many-body atomic structure calculations. Our method can be used to obtain the lifetime of a state which is usually difficult to measure and can be used to determine the magnetic dipole transition matrix elements in heavy ions such as Ba+ and Ra+, and can also be universally applied to lifetime ratio measurements of other single atoms and ions with a similar structure. |
| 语种 | 英语 |
| WOS记录号 | IOP:0953-4075-51-4-AAA191 |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/12333]  |
| 专题 | 中国科学院武汉物理与数学研究所 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 2.Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China 3.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Guan,H,Shao,H,Huang,Y,et al. Direct measurement of the 3d2D3/2 to 3d2D5/2 lifetime ratio in a single trapped 40Ca+[J]. Journal of Physics B: Atomic, Molecular and Optical Physics,2018,51(4). |
| APA | Guan,H,Shao,H,Huang,Y,&Gao,K.(2018).Direct measurement of the 3d2D3/2 to 3d2D5/2 lifetime ratio in a single trapped 40Ca+.Journal of Physics B: Atomic, Molecular and Optical Physics,51(4). |
| MLA | Guan,H,et al."Direct measurement of the 3d2D3/2 to 3d2D5/2 lifetime ratio in a single trapped 40Ca+".Journal of Physics B: Atomic, Molecular and Optical Physics 51.4(2018). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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