Detecting spin nonclassicality via average skew information

doi:10.1140/epjp/s13360-022-02875-5

	Detecting spin nonclassicality via average skew information
	Dai, Hao 1; Luo, Shunlong 2,3
刊名	EUROPEAN PHYSICAL JOURNAL PLUS
	2022-05-29
卷号	137 期号:5 页码:10
ISSN号	2190-5444
DOI	10.1140/epjp/s13360-022-02875-5
英文摘要	Spin nonclassicality is the discrete analogue of the continuous variable optical nonclassicality, and may be regarded as a resource related to coherence or quantumness of states with respect to an overcomplete basis consisting of spin coherent states. It plays a significant role in some quantum information processing tasks such as quantum computation and quantum metrology. Detecting and quantifying spin nonclassicality, which are of both theoretical and experimental relevance, have attracted much attention in quantum information theory. In this work, by virtue of the Wigner-Yanase skew information and the resolution of identity induced by spin coherent states, we provide an information-theoretic approach to spin nonclassicality, elucidate its basic properties and illustrate it through some important and widely used spin states. In particular, we derive a convenient criterion for detecting spin nonclassicality and use it to certify spin nonclassicality for some prototypical states.
资助项目	National Key R &D Program of China[2020YFA0712700] ; National Key R &D Program of China[2019QY0702] ; National Key R &D Program of China[2017YFA0303903] ; National Natural Science Foundation of China[11875317] ; National Natural Science Foundation of China[61833010]
WOS研究方向	Physics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000802132400001
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/61396]
专题	中国科学院数学与系统科学研究院
通讯作者	Luo, Shunlong
作者单位	1.Tsinghua Univ, Ctr Quantum Informat, Inst Interdisciplinary Informat Sci, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Dai, Hao,Luo, Shunlong. Detecting spin nonclassicality via average skew information[J]. EUROPEAN PHYSICAL JOURNAL PLUS,2022,137(5):10.
APA	Dai, Hao,&Luo, Shunlong.(2022).Detecting spin nonclassicality via average skew information.EUROPEAN PHYSICAL JOURNAL PLUS,137(5),10.
MLA	Dai, Hao,et al."Detecting spin nonclassicality via average skew information".EUROPEAN PHYSICAL JOURNAL PLUS 137.5(2022):10.