Detecting nonclassicality of light via Lieb's concavity

doi:10.1016/j.physleta.2019.125836

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	Detecting nonclassicality of light via Lieb's concavity
	Luo, Shunlong1,2 ; Zhang, Yue 1,2
	2019-09-12
发表期刊	PHYSICS LETTERS A
ISSN	0375-9601
卷号	383 期号:26 页码:5
摘要	Nonclassical light states are important for both conceptual and practical reasons: they are basic ingredients in testing and exploring quantum foundations, and are crucial resources in quantum technologies. Various useful criteria have been developed to detect nonclassicality in the literature, and several meaningful measures of nonclassicality have been introduced and measured experimentally. In this work, by use of a non-Hermitian generalization of the Wigner-Yanase-Dyson skew information and playing with operator ordering in evaluating average photon number, we develop a novel family of criteria for detecting nonclassicality of light based on Lieb's concavity, which is a deep and powerful result concerning interaction between quantum states and observables. We elucidate the information-theoretic as well as the physical meaning of the criteria, and illustrate their effectiveness in capturing and quantifying nonclassicality of various important light states. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Bosonic fields Nonclassical states Lieb's concavity Wigner-Yanase-Dyson information
DOI	10.1016/j.physleta.2019.125836
语种	英语
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	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000485855100007
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/35677
专题	应用数学研究所
通讯作者	Luo, Shunlong
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Luo, Shunlong,Zhang, Yue. Detecting nonclassicality of light via Lieb's concavity[J]. PHYSICS LETTERS A,2019,383(26):5.
APA	Luo, Shunlong,&Zhang, Yue.(2019).Detecting nonclassicality of light via Lieb's concavity.PHYSICS LETTERS A,383(26),5.
MLA	Luo, Shunlong,et al."Detecting nonclassicality of light via Lieb's concavity".PHYSICS LETTERS A 383.26(2019):5.