Information-theoretic approach to atomic spin nonclassicality

doi:10.1103/PhysRevA.100.062114

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	Information-theoretic approach to atomic spin nonclassicality
	Dai, Hao ; Luo, Shunlong 2
刊名	PHYSICAL REVIEW A
	2019-12-12
卷号	100 期号:6 页码:10
ISSN号	2469-9926
DOI	10.1103/PhysRevA.100.062114
英文摘要	Nonclassicality of light has been studied, both extensively and intensively, in terms of optical coherent states, and various quantifiers for nonclassicality of light have been introduced in recent decades. In contrast, the corresponding quantification issue for atomic spin systems is relatively less studied, though there has been some remarkable progress. In this paper, by virtue of the Wigner-Yanase skew information and working in the framework of atomic coherent states, we introduce a quantifier for nonclassicality of atomic spin states from an information-theoretic perspective and reveal its fundamental properties. This quantifier leads to a simple yet powerful criterion for detecting nonclassicality via convexity of the skew information. This criterion is sufficient, but not necessary. The concept is illustrated through several paradigms. We further elucidate some intrinsic relations between nonclassicality and entanglement and indicate that the nonclassicality quantifier may be transferred to an entanglement quantifier.
资助项目	National Natural Science Foundation of China[11875317] ; National Center for Mathematics and Interdisciplinary Sciences, CAS[Y029152K51]
WOS研究方向	Optics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000502264400003
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/50424]
专题	应用数学研究所
通讯作者	Luo, Shunlong
作者单位	1.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Dai, Hao,Luo, Shunlong. Information-theoretic approach to atomic spin nonclassicality[J]. PHYSICAL REVIEW A,2019,100(6):10.
APA	Dai, Hao,&Luo, Shunlong.(2019).Information-theoretic approach to atomic spin nonclassicality.PHYSICAL REVIEW A,100(6),10.
MLA	Dai, Hao,et al."Information-theoretic approach to atomic spin nonclassicality".PHYSICAL REVIEW A 100.6(2019):10.