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Strong quantum nonlocality without entanglement in multipartite quantum systems

文献类型：期刊论文

作者Yuan, Pei1,2; Tian, Guojing1,2; Sun, Xiaoming1,2,3
刊名PHYSICAL REVIEW A
出版日期2020-10-29
卷号102期号:4页码:14
ISSN号2469-9926
DOI10.1103/PhysRevA.102.042228
英文摘要In this paper, we generalize the concept of strong quantum nonlocality from two aspects. First, in a tripartite quantum system, we present a construction of strongly nonlocal quantum states containing 6(d - 1)(2) orthogonal product states in C-d circle times C-d circle times C-d and build 6d(2) - 8d + 4 product states in C-d circle times C-d circle times Cd+1, which have been proved to be strongly nonlocal. Obviously, both results turn out to be one order of magnitude smaller than the number of basis states d(3) for d >= 3. Second, we give explicit forms of strongly nonlocal orthogonal product basis in C-3 circle times C-3 circle times C-3 circle times C-3 and C-4 circle times C-4 circle times C-4 circle times C-4 quantum systems, where four is the largest known number of subsystems in which there exists strong quantum nonlocality without entanglement up to now. All the results positively answer the open problems raised by Halder et al. [Phys. Rev. Lett. 122, 040403 (2019)]; that is, there do exist a small number of quantum states that can demonstrate strong quantum nonlocality without entanglement.
资助项目National Natural Science Foundation of China[61832003] ; National Natural Science Foundation of China[61801459] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB28000000] ; National Postdoctoral Program for Innovative Talent[BX20190335]
WOS研究方向Optics ; Physics
语种英语
WOS记录号WOS:000583188400001
出版者AMER PHYSICAL SOC
源URL[http://119.78.100.204/handle/2XEOYT63/15497]  
专题中国科学院计算技术研究所期刊论文_英文
通讯作者Tian, Guojing
作者单位1.Chinese Acad Sci, Inst Comp Technol, CAS Key Lab Network Data Sci & Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Comp Sci & Technol, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Pei,Tian, Guojing,Sun, Xiaoming. Strong quantum nonlocality without entanglement in multipartite quantum systems[J]. PHYSICAL REVIEW A,2020,102(4):14.
APA Yuan, Pei,Tian, Guojing,&Sun, Xiaoming.(2020).Strong quantum nonlocality without entanglement in multipartite quantum systems.PHYSICAL REVIEW A,102(4),14.
MLA Yuan, Pei,et al."Strong quantum nonlocality without entanglement in multipartite quantum systems".PHYSICAL REVIEW A 102.4(2020):14.

入库方式： OAI收割

来源：计算技术研究所

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