Revealing nonclassicality via s-ordered phase-space distribution

doi:10.1007/s11433-022-1968-8

	Revealing nonclassicality via s-ordered phase-space distribution
	Zhang, Yue 1,2; Liu, Shuheng 1; Jing, Boxuan 1; He, Qiongyi 1,2,3; Luo, Shunlong 4,5
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2022-11-01
卷号	65 期号:11 页码:7
关键词	nonclassicality s-ordered phase-space distribution Gaussian states Gaussian noise channels
ISSN号	1674-7348
DOI	10.1007/s11433-022-1968-8
英文摘要	Nonclassical states play a crucial role in both theoretical and experimental investigations of quantum optics, and there is a wide interest in characterization and quantification of nonclassicality. By exploiting the freedom of the parameter s in the s-ordered phase-space distribution introduced by Cahill and Glauber [Phys. Rev. 177, 1882 (1969)], we develop a method to reveal and quantify optical nonclassicality via the divided difference of the s-ordered phase-space distribution. Our approach yields naturally a family of quantifiers of optical nonclassicality, which have many desirable properties such as convexity and monotonicity under the Gaussian noise channels. The quantifiers are illustrated by evaluating nonclassicality of several typical states. Two simple and convenient criteria for nonclassicality are established, which in particular certify all nonclassical Gaussian states.
资助项目	National Natural Science Foundation of China[11975026] ; National Natural Science Foundation of China[12125402] ; National Key R&D Program of China[2020YFA0712700] ; China Postdoctoral Science Foundation[2021M690414] ; Beijing Postdoctoral Research Foundation[2021E7,091] ; Beijing Natural Science Foundation[Z190005]
WOS研究方向	Physics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000859033200004
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/60917]
专题	中国科学院数学与系统科学研究院
通讯作者	He, Qiongyi
作者单位	1.Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China 2.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China 3.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China 4.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yue,Liu, Shuheng,Jing, Boxuan,et al. Revealing nonclassicality via s-ordered phase-space distribution[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2022,65(11):7.
APA	Zhang, Yue,Liu, Shuheng,Jing, Boxuan,He, Qiongyi,&Luo, Shunlong.(2022).Revealing nonclassicality via s-ordered phase-space distribution.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,65(11),7.
MLA	Zhang, Yue,et al."Revealing nonclassicality via s-ordered phase-space distribution".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 65.11(2022):7.