Strong quantum nonlocality without entanglement in multipartite quantum systems

doi:10.1103/PhysRevA.102.042228

	Strong quantum nonlocality without entanglement in multipartite quantum systems
	Yuan, Pei 1,2; Tian, Guojing 1,2; Sun, Xiaoming 1,2,3
	2020-10-29
发表期刊	PHYSICAL REVIEW A
ISSN	2469-9926
卷号	102 期号:4 页码:14
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.
DOI	10.1103/PhysRevA.102.042228
收录类别	SCI
语种	英语
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
WOS类目	Optics ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000583188400001
出版者	AMER PHYSICAL SOC
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/15498
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.