Quantumness of Bosonic Field States

doi:10.1007/s10773-019-04313-2

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	Quantumness of Bosonic Field States
	Luo, Shunlong1,2 ; Zhang, Yue 1,2
	2019-12-03
发表期刊	INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
ISSN	0020-7748
页码	12
摘要	In bosonic fields, coherent states are widely regraded as the most classical (the least quantum) states for several operational and physical reasons. In this context, a natural question arises: How classical/quantum is a state? This fundamental issue has been pursued from various perspectives, and many significant measures of quantumness (nonclassicality) have been proposed, each with its own unique merit and usage. However, there is no universal measure of quantumness, and it is desirable to characterize quantumness from different angles. In this work, by exploiting the Wigner-Yanase skew information and the resolution of identity induced by coherent states of bosonic fields, we introduce a measure of quantumness which possesses several remarkable properties: Easy computation, information-theoretic meaning, physical relevance. We reveal its connection with Renyi 2-entropy of Husimi distributions of square root of quantum states, illustrate its significance in capturing quantumness through prototypical examples, and show that it is indeed a bona fide measure of quantumness.
关键词	Bosonic fields Nonclassical states Quantumness Wigner-Yanase skew information
DOI	10.1007/s10773-019-04313-2
收录类别	SCI
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:000501028600001
出版者	SPRINGER/PLENUM PUBLISHERS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/50345
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. Quantumness of Bosonic Field States[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,2019:12.
APA	Luo, Shunlong,&Zhang, Yue.(2019).Quantumness of Bosonic Field States.INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,12.
MLA	Luo, Shunlong,et al."Quantumness of Bosonic Field States".INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS (2019):12.