Direct measurement of the 3d D-2(3/2) to 3d D-2(5/2) lifetime ratio in a single trapped Ca-40(+)

doi:10.1088/1361-6455/aaa191

	Direct measurement of the 3d D-2(3/2) to 3d D-2(5/2) lifetime ratio in a single trapped Ca-40(+)
	Shao, H.1,2,3; Huang, Y.1,3; Guan, H.1,3; Gao, K.1,3
刊名	JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
	2018-02-28
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
文献子类	Article
英文摘要	We present for the first time a direct measurement of the lifetime ratio between the 3d D-2(3/2) and 3d D-2(5/2) metastable states in a single trapped Ca-40(+). 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 3d D-2(3/2) and 3d D-2(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.
WOS关键词	CA-II ; BA+ ; RATES ; SR+
WOS研究方向	Optics ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000423216700002
资助机构	National Natural Science Foundation of China(91336211 ; National Natural Science Foundation of China(91336211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; 11034009 ; 11034009 ; 11474318 ; 11474318 ; 11622434) ; 11622434) ; National Natural Science Foundation of China(91336211 ; National Natural Science Foundation of China(91336211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; 11034009 ; 11034009 ; 11474318 ; 11474318 ; 11622434) ; 11622434) ; National Natural Science Foundation of China(91336211 ; National Natural Science Foundation of China(91336211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; 11034009 ; 11034009 ; 11474318 ; 11474318 ; 11622434) ; 11622434) ; National Natural Science Foundation of China(91336211 ; National Natural Science Foundation of China(91336211 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB21030100) ; 11034009 ; 11034009 ; 11474318 ; 11474318 ; 11622434) ; 11622434)
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/12800]
专题	中国科学院武汉物理与数学研究所
通讯作者	Guan, H.; Gao, K.
作者单位	1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Wuhan Inst Phys & Math, Key Lab Atom Frequency Stand, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Shao, H.,Huang, Y.,Guan, H.,et al. Direct measurement of the 3d D-2(3/2) to 3d D-2(5/2) lifetime ratio in a single trapped Ca-40(+)[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2018,51(4).
APA	Shao, H.,Huang, Y.,Guan, H.,&Gao, K..(2018).Direct measurement of the 3d D-2(3/2) to 3d D-2(5/2) lifetime ratio in a single trapped Ca-40(+).JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,51(4).
MLA	Shao, H.,et al."Direct measurement of the 3d D-2(3/2) to 3d D-2(5/2) lifetime ratio in a single trapped Ca-40(+)".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 51.4(2018).