国家自然科学基金(11275131)

作品数：8被引量：6H指数：2
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Sharp continuity bounds for entropy and conditional entropy
《Science China(Physics,Mechanics & Astronomy)》2017年第2期64-68,共5页ZhiHua Chen ZhiHao Ma Ismail Nikoufar Shao-Ming Fei 
supported by the National Natural Science Foundation of China(Grant Nos.11371247,11275131,11675113,and 11571313)
The von Neumann entropy captures many operational quan- tities in the quantum information theory such as quantum ca- pacity of the communication channel. Von Neumann entropy is continuous and is represented by Fannes ...
关键词：条件熵 量子信息理论 量子信息处理 通信信道 量子纠缠 量子关联 多操作 不等式 
Uncertainty relations based on skew information with quantum memory
《Science China(Physics,Mechanics & Astronomy)》2017年第1期62-64,共3页ZhiHao Ma ZhiHua Chen Shao-Ming Fei 
supported by the National Natural Science Foundation of China (Grant Nos. 11275131, 11371247, 11571313, and 11675113)
Uncertainty principle is one of the most fascinating features of the quantum world. It asserts a fundamental limit on the precision with which certain pairs of physical properties of a particle, such as position and m...
关键词：Uncertainty relations based on skew information with quantum memory 
von Neumann measurement-related matrices and the nullity condition for quantum correlation
《Science China(Physics,Mechanics & Astronomy)》2016年第12期27-32,共6页MingJing Zhao Teng Ma TingGui Zhang Shao-Ming Fei 
supported by the National Natural Science Foundation of China(Grant Nos.11401032,11501153,11275131,and 11675113);the Natural Science Foundation of Hainan Province(Grant No.20161006)
We study von Neumann measurement-related matrices, and the nullity condition of quantum correlation. We investigate the properties of these matrices that are related to a von Neumann measurement. It is shown that thes...
关键词：von Neumann measurement matrix RANK quantum correlation 
Detection of the ideal resource for multiqubit teleportation
《Chinese Physics B》2015年第7期88-91,共4页赵明镜 陈斌 费少明 
supported by the National Natural Science Foundation of China(Grant Nos.11401032,11275131,and 61473325);the Foundation of Beijing Information Science and Technology University,China(Grant No.1425032);the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry of China
We give a sufficient condition for detecting the entanglement resource for perfect multiqubit teleportation. The criterion involves only local measurements on some complementary observables and can be experimentally i...
关键词：quantum teleportation teleportation witness teleportation resource 
A sufficient and necessary criterion for separability of bipartite quantum states
《Chinese Physics B》2014年第8期252-255,共4页赵慧 于欣玉 
Project supported by the National Natural Science Foundation of China(Grant Nos.11101017 and 11275131);Beijing Natural Science Foundation Program,and the Scientific Research Key Program of Beijing Municipal Commission of Education(Grant No.KZ201210028032);the Importation and Developmentof High-Caliber Talents Project of Beijing Municipal Institutions(Grant No.CIT&TCD201404067)
A sufficient and necessary criterion for separability of bipartite quantum states is presented. We construct a class of mixed states in 2 k quantum systems and in 3 k quantum systems, respectively and show that thes...
关键词：positive partial transposition SEPARABILITY 
Time optimal quantum control of two-qubit systems被引量：3
《Science China(Physics,Mechanics & Astronomy)》2013年第11期2116-2121,共6页LI Bin YU ZuHuan FEI ShaoMing LI-JOST XianQing 
supported by the National Natural Science Foundation of China(Grant No.11275131);the National Research Foundation for the Doctoral Program of Higher Education of China
We study the optimal quantum control of heteronuclear two-qubit systems described by a Hamiltonian containing both nonlocal internal drift and local control terms.We derive an explicit formula to compute the minimum t...
关键词：time optimal quantum control heteronuclear two-spin system local invariants 
Bound entanglement and teleportation for arbitrary bipartite systems
《Chinese Physics B》2013年第10期135-139,共5页范姣 赵慧 
Project supported by the National Natural Science Foundation of China(Grant Nos.11101017 and 11275131);Beijing Natural Science Foundation andScientific Research Key Program of Beijing Municipal Commission of Education(Grant No.KZ201210028032)
We construct bound entangled states that are entangled but from which no entanglement can De olstilled It all parues are allowed only by performing local operations and classical communications. Moreover, as applicati...
关键词：bound entanglement TELEPORTATION partial transpose 
Characterization of four-qubit states via Bell inequalities被引量：3
《Chinese Science Bulletin》2013年第19期2334-2339,共6页ZHAO Hui ZHANG XingHua FEI ShaoMing WANG ZhiXi 
supported by the National Natural Science Foundation of China (11101017 and 11275131);Beijing Natural Science Foundation Program;Scientific Research Key Program of Beijing Municipal Commission of Education(KZ201210028032)
A set of Bell inequalities classifying the quantum entanglement of four-qubit states is presented. These inequalities involve only two measurement settings per observer and can characterize fully separable, bi-separab...
关键词：贝尔不等式 表征 二次不等式 量子纠缠 量子比特 分离 量子态 运营商 
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