国家自然科学基金(10374010)

作品数：6被引量：28H指数：2
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相关作者：张竞夫卢志恒龙桂鲁王川周萍更多>>
相关机构：北京师范大学教育部更多>>
相关期刊：《Science China(Physics,Mechanics & Astronomy)》《北京师范大学学报（自然科学版）》《Chinese Physics B》《Science Bulletin》更多>>
相关主题：QUANTUM量子通信量子纠缠核磁共振GENERALIZED更多>>
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Complete multiple round quantum dense coding with quantum logical network被引量：5
《Chinese Science Bulletin》2007年第9期1162-1165,共4页LI ChunYan1,2,LI XiHan1,2,DENG FuGuo1,2,3,ZHOU Ping1,2 & ZHOU HongYu1,2,3 1 Key Laboratory of Beam Technology and Material Modification of Ministry of Education,Beijing Normal University,Beijing 100875,China 2 Institute of Low Energy Nuclear Physics,and Department of Material Science and Engineering,Beijing Normal University,Beijing 100875,China 3 Beijing Radiation Center,Beijing 100875,China 
Supported by the National Natural Science Foundation of China (Grant Nos 10604008, 10435020, 10254002, A0325401 and 10374010);Beijing Education Committee (Grant No. XK100270454)
We present a complete multiple round quantum dense coding scheme for improving the source ca-pacity of that introduced recently by Zhang et al. The receiver resorts to two qubits for storing the four local unitary ope...
关键词：量子通信 多重量子紧凑编码 量子逻辑网络 量子纠缠 
量子逻辑网络下的完全多回路量子密集编码被引量：1
《科学通报》2006年第24期2838-2841,共4页李春燕 李熙涵 邓富国 周萍 周宏余 
国家自然科学基金项目(批准号:10604008,10435020,10254002,A0325401,10374010);北京市教育委员会共建项目建设计划(编号:XK100270454)资助.
提出了一种完全的多回路的量子密集编码方案.它可以提高张竞夫等人最近提出的核磁共振实现多回合量子稠密编码方案的信源容量.信息接收方在每次循环中用两个量子比特来记录四个局域幺正操作.
关键词：量子通信 量子密集编码 量子逻辑网络 完全的 
Effect of disturbance in perfect state transfer被引量：1
《Chinese Physics B》2006年第2期272-275,共4页刘丹 张竞夫 
Project supported by the National Natural Science Foundation of China （Grant No 10374010）.Acknowledgement Liu Dan would like to thank Professor Long Gui- Lu of Tsinghua University for helpful discussions.
The influence of the disturbance caused by the imperfection of the engineering coupling constants in the perfect state transfer is calculated. The results show that the fidelity for the perfect state transfer is serio...
关键词：XY-chain perfect state transfer DISTURBANCE 
核磁共振实现多回合量子稠密编码被引量：2
《中国科学（G辑）》2005年第4期390-398,共9页张竞夫 谢竞袆 王川 邓志威 卢志恒 龙桂鲁 
国家自然科学基金(批准号:10374010);中国博士后科学基金资助项目
提出并实现了多回合量子稠密编码方案.该方案以量子相位估算为工作机制.利用m+1量子位系统,Bob只操作1个量子位,通过与Alice进行m个回合的传递,把2m+1个信息传递给Alice.信息容量由经典方案的m位增加到m+1位.我们在3位核磁共振量子计算...
关键词：量子稠密编码 量子相位估算 核磁共振 量子计算机 核磁共振量子计算机 编码方案 量子位 稠密 信息传递 工作机制 
Dense coding scheme using superpositions of Bell-states and its NMR implementation被引量：19
《Science China(Physics,Mechanics & Astronomy)》2005年第1期57-67,共11页ZHANG Jingfu, XIE Jingyi, DENG Zhiwei & LU Zhiheng Key Laboratory for Quantum Information and Measurements, Department of Physics, Tsinghua University, Beijing 100084, China Center for Quantum Information, Tsinghua University, Beijing 100084, China Department of Materials Science and Engineering, Beijing Normal University, Beijing 100875, China Testing and Analytical Center, Beijing Normal University, Beijing 100875, China Department of Physics, Beijing Normal University, Beijing 100875, China 
We are grateful to Professor Long Guilu and Mr.Liu Xiaoshu for helpful discussions.This work was supported by the National Natural Science Foundation of China(Grant No.10374010);the China Postdoctoral Science Foundation.
Dense coding using superpositions of Bell-states is proposed. The generalized Grover's algorithm is used to prepare the initial entangled states, and the reverse process of the quantum algorithm is used to determine t...
关键词：DENSE coding  SUPERPOSITIONS of Bell-states  GENERALIZED Grover's algorithm  NUCLEAR magnetic res-onance  QUANTUM computer. 
量子纠缠控制的核磁共振实验演示
《北京师范大学学报（自然科学版）》2004年第5期641-642,共2页谢竞祎 张竞夫 邓志威 卢志恒 
国家自然科学基金资助项目 (10 374 0 10 )
As two forms of the quantum entanglement control (QEC), the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance (NMR) quantum computer. The pseudopure state is p...
关键词：量子纠缠 纯态 量子相干 微观性质 量子力学 核磁共振 实验演示 课题 初始状态 表述 
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