Quantifying non-Gaussianity of bosonic fields via an uncertainty relation

doi:10.1103/PhysRevA.101.012125

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	Quantifying non-Gaussianity of bosonic fields via an uncertainty relation
	Fu, Shuangshuang 1; Luo, Shunlong 2,3; Zhang, Yue 2,3
刊名	PHYSICAL REVIEW A
	2020-01-30
卷号	101 期号:1 页码:8
ISSN号	2469-9926
DOI	10.1103/PhysRevA.101.012125
英文摘要	While Gaussian states and associated Gaussian operations are basic ingredients and convenient objects for continuous-variable quantum information, it is also realized that non-Gaussianity is an important resource for quantum information processing. The characterization and quantification of non-Gaussianity have been widely studied in the past decade, with several significant measures for non-Gaussianity introduced. In this work, by exploiting an information-theoretic refinement of the conventional Heisenberg uncertainty relation and a physical characterization of Gaussian states as minimum uncertainty states, we introduce an easily computable measure for non-Gaussianity of bosonic field states in terms of the Wigner-Yanase skew information. Fundamental properties, as well as intuitive meaning, of this measure are unveiled. The concept is illustrated by prototypical non-Gaussian states, and compared with various existent measures for non-Gaussianity. Its merit and physical significance are elucidated.
资助项目	Young Scientists Fund of the National Natural Science Foundation of China[11605006] ; Natural Science Foundation of China[11875317]
WOS研究方向	Optics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000510143800001
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/50771]
专题	应用数学研究所
通讯作者	Zhang, Yue
作者单位	1.Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, 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	Fu, Shuangshuang,Luo, Shunlong,Zhang, Yue. Quantifying non-Gaussianity of bosonic fields via an uncertainty relation[J]. PHYSICAL REVIEW A,2020,101(1):8.
APA	Fu, Shuangshuang,Luo, Shunlong,&Zhang, Yue.(2020).Quantifying non-Gaussianity of bosonic fields via an uncertainty relation.PHYSICAL REVIEW A,101(1),8.
MLA	Fu, Shuangshuang,et al."Quantifying non-Gaussianity of bosonic fields via an uncertainty relation".PHYSICAL REVIEW A 101.1(2020):8.