Converting nonclassicality to quantum correlations via beamsplitters

doi:10.1209/0295-5075/128/30003

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	Converting nonclassicality to quantum correlations via beamsplitters
	Fu, Shuangshuang 2; Luo, Shunlong 1,3; Zhang, Yue 1,3
刊名	EPL
	2019-11-01
卷号	128 期号:3 页码:7
ISSN号	0295-5075
DOI	10.1209/0295-5075/128/30003
英文摘要	While for single-mode bosonic fields, one talks about nonclassicality of quantum states, which plays an important role in various quantum information processing tasks, for composite systems, one talks about quantum correlations such as quantum entanglement and quantum discord, which are crucial and indispensable for implementation of quantum communication and computation. Both nonclassicality and quantum correlations are quantum features of physical systems and fundamental resources which can be exploited to bring supremacy over classical systems. A natural question arises on the relation and interconversion between these two resources. In this work, we investigate the conversion of single-mode nonclassicality into quantum correlations via beamsplitters. Our work is based on the idea of Asboth et al. (Phys. Rev. Lett., 94 (2005) 173602) of converting nonclassicality into quantum entanglement via a balanced beamsplitter. Through a paradigmatic setup with Gaussian states fed into the beamsplitters, we demonstrate that quantum correlations between the output states, as exhibited by either entanglement or quantum discord, increase monotonically with nonclassicality of the input Gaussian states, as quantified by an information-theoretic measure in terms of the Wigner-Yanase skew information. Copyright (C) EPLA, 2020
资助项目	Young Scientists Fund of the National Natural Science Foundation of China[11605006] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-012A3] ; Natural Science Foundation of China[11875317]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000527827700003
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/51363]
专题	应用数学研究所
通讯作者	Fu, Shuangshuang
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, 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. Converting nonclassicality to quantum correlations via beamsplitters[J]. EPL,2019,128(3):7.
APA	Fu, Shuangshuang,Luo, Shunlong,&Zhang, Yue.(2019).Converting nonclassicality to quantum correlations via beamsplitters.EPL,128(3),7.
MLA	Fu, Shuangshuang,et al."Converting nonclassicality to quantum correlations via beamsplitters".EPL 128.3(2019):7.