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Quasi-secure quantum dialogue using single photons

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Science china(Physics,Mechanics & Astronomy) 2007年第5期50卷 558-562页

作者： YANG YuGuang1,2 & WEN QiaoYan31 College of Computer Science and Technology, beijing University of Technology, beijing 100022, china 2 State Key Laboratory of information Security, Graduate University of the Chinese Academy of Sciences, beijing 100049, china 3 School of Science, beijing University of Posts and Telecommunications, beijing 100876, china College of Computer Science and Technology Beijing University of Technology Beijing China State Key Laboratory of information Security Graduate University of the Chinese Academy of Sciences Beijing China School of Science Beijing University of Posts and Telecommunications Beijing China

A quasi-secure quantum dialogue protocol using single photons was proposed. Different from the previous entanglement-based protocols, the present protocol uses batches of single photons which run back and forth between the two parties. A round run for each photon makes the two parties each obtain a classical bit of information. So the efficiency of information transmission can be increased. The present scheme is practical and well within the present-day technology.

关键词： quantum dialogue, single photon, quantum secure direct communication

Multiparty quantum secret sharing of classical and quantum messages

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Progress in Natural Science:Materials International 2007年第1期17卷 26-31页

作者： CHEN Pan, DENG Fuguo and LONG Guilu ( Key Laboratory for Quantum information and Measurements, and Department of Physics, Tsinghua University, beijing 100084, china Key Laboratory of Beam Technology and Material Modification, MOE, Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, beijing Normal University, beijing 100875, china beijing Radiation center, beijing 100875, china Key Laboratory for Atomic and Molecular Nano-Sciences, Tsinghua University, beijing 100084, china) Key Laboratory for Quantum information and Measurements and Department of Physics Tsinghua University Beijing 100084 China Key Laboratory of Beam Technology and Material Modification MOE Institute of Low Energy Nuclear Physics and Department of Material Science and Engineering Beijing Normal University Beijing 100875 China beijing Radiation center Beijing 100875 China Key Laboratory for Atomic and Molecular Nano-Sciences Tsinghua University Beijing 100084 China

A scheme for multiparty quantum secret sharing of classical and quantum messages is proposed by using entanglement swapping. This scheme can distribute not only the classical information but also the quantum informati... 详细信息

关键词： quantum secret sharing classical message quantum message EPR pair.

Reconfigurable design and implementation of the MD6 Hash function

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The Journal of china Universities of Posts and Telecommunications 2010年第2期17卷 109-115页

作者： GAO Xian-wei Department of Electronic and information Engineering,beijing Electronic Science and Technology Institute,beijing 100070,china Department of Electronic and information Engineering Beijing Electronic Science and Technology Institute Beijing 100070 China

Efficient reconfigurable field programmable gate array （FPGA） architectures for the MD6-224/256/384/512 Hash algorithm are proposed in this article. The basic iterative compact design requires 923 ALMs and achieves a throughput ranging from 225 Mbit/s to 394 Mbit/s at a maximum frequency of 198 MHz. The 32-step-urtrolled high-throughput design requires 7 090 ALMs and achieves a throughput ranges from 5 776 Mbit/s to 9 490 Mbit/s at a maximum frequency of 173 MHz. The simulation results show that high flexibility and efficient FPGA implementation of the MD6 Hash function is achieved.

关键词： SHA-3 MD6 reconfigurable iterative loop-unrolling

Gasflow style level posture sensor and angular velocity gyroscope assembled inertial sensor

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Progress in Natural Science:Materials International 2007年第8期17卷 971-978页

作者： Zhang Fuxue~(**) Mao Xu (Research Centre of Sensor Technology,beijing information Technology Institute,beijing 100101,china) Research Centre of Sensor Technology Beijing Information Technology Institute Beijing 100101 China

The compensational loop consisting of a gasflow style angular velocity gyroscope and gasflow level posture sensor is pro- posed to improve the signal of gasflow style *** compensational loop could remove acceleration interfere from the signal of *** assembled gasflow type inertial sensor not only measures static state angular,but also restrains the acceleration which interferes the output signal of level posture sensor in dynamic ***,the precision of outputs signal increases ***,the output sig- nal includes the angle velocity signal.

关键词： gasflow style inertia sensor

Mechanism and Defense on Malicious Code

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 83-88页

作者： WEN Wei-ping 1,2,3, QING Si-han 1,2,31. Institute of Software, the Chinese Academy of Sciences, beijing 100080, china 2.Engineering Research center for information Security Technology, the Chinese Academy of Sciences, beijing 100080, china 3.Graduate School of the Chinese Academy of Sciences, beijing 100080, china Institute of Software the Chinese Academy of Sciences Beijing China Engineering Research center for information Security Technology the Chinese Academy of Sciences Beijing China Graduate School of the Chinese Academy of Sciences Beijing China

With the explosive growth of network applications, the threat of the malicious code against network security becomes increasingly serious. In this paper we explore the mechanism of the malicious code by giving an attack model of the malicious code, and discuss the critical techniques of implementation and prevention against the malicious code. The remaining problems and emerging trends in this area are also addressed in the paper.

关键词： malicious code attacking model mechanism defense system security network security

Implementation of a multiple round quantum dense coding using nuclear magnetic resonance

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Science china(Physics,Mechanics & Astronomy) 2005年第6期48卷 706-715页

作者： ZHANG Jingfu1, XIE Jingyi2, WANG Chuan1, DENG Zhiwei3, LU Zhiheng4, & LONG Guilu1,5 1. Key Laboratory For Quantum information and Measurements of MOE, Department of Physics, Tsinghua University, beijing 100084,china 2. Department of Materials Science and Engineering, beijing Normal University, beijing 100875, china 3. Testing and Analytical center, beijing Normal University, beijing 100875,china 4. Department of Physics, beijing Normal University, beijing 100875, china 5. Key Laboratory For atomic and Molecular Nanosciences, Tsinghua University, beijing 100084,china Key Laboratory For Quantum information and Measurements Department of Physics 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 Key Laboratory for Atomic and Molecular Nanosciences Tsinghua University Beijing 100084 China

A multiple round quantum dense coding scheme based on the quantum phase estimation algorithm is proposed and implemented in a three qubit nuclear magnetic resonance (NMR) quantum computer. Using an m + 1 qubit system, Bob can transmit one of 2m+1 messages to Alice, through manipulating only one qubit and exchanging it between Alice and Bob for m rounds. The information capacity is enhanced to m + 1 bits as compared to m bits in a classical scheme. The scheme has been demonstrated in NMR system, and the experimental results show a good agreement between theory and experiment.

关键词： quantum dense coding, multiple round, nuclear magnetic resorance

Response synchronization: New progress in brain-visual information processing

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Chinese Science Bulletin 1999年第16期44卷 1447-1458页

作者： ZHAO Songnian, XIONG Xiaoyun, YAO Guozheng and GUO Aike1. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry , Institute of Atmospheric Physics , Chinese Academy of Sciences , beijing 100029, china 2. Commission of the National Natural Science Foundation of china , beijing 100083, china 3. The center of information Science , Peking University, beijing 100871, china 4. Open Laboratory of Visual information Processing , Institute of Biophysics , Chinese Academy of Sciences , beijing 100101, china State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Commission of the National Natural Science Foundation of china Beijing China The center of information Science Peking University Beijing China Open Laboratory of Visual information Processing Institute of Biophysics Chinese Academy of Sciences Beijing China

Studies on brain-vision have entered a new stage, after the stimulus-induced y synchronized oscillation of neuron group activities have been discovered in cat primary visual cortex. Naturally, how to understand the visual system became a very important methodological problem. From aspects such as information processing, nonlinear dynamics and neuronal network, some primary problems in vision studies have been deeply discussed, which are

关键词： neuron group (neural population) synchro-oscillation computational theory of vision response synchroniza-tion.

Short-term load forecasting based on fuzzy neural network

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International Journal of Minerals,Metallurgy and Materials 1997年第3期11卷 46-48,53页

作者： DONG Liang MU Zhichun (information Engineering School, University of Science and Technology beijing, beijing 100083, china) Univ of Science and Technology Beijing Beijing China

The fuzzy neural network is applied to the short-term load forecasting. The fuzzy rules and fuzzy membership functions of the network are obtained through fuzzy neural network learming. Three inference algorithms, i.e. themultiplicative inference, the maximum inference and the minimum inference, are used for comparison. The learningalgorithms corresponding to the inference methods are derived from back-propagation algorithm. To validate the fuzzyneural network model, the network is used to Predict short-term load by compaing the network output against the realload data from a local power system supplying electricity to a large steel manufacturer. The experimental results aresatisfactory.

关键词： short-term load forecasting fuzzy control fuzzy neural networks

An application of the Riemann-Roch theorem

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Science china Mathematics 2008年第4期51卷 765-772页

作者： WANG ShiKun~1 ZHANG HuiPing~(2+) 1 KLMM and IAM AMSS Chinese Academy of Sciences beijing 100080 china 2 School of information Renmin University of china beijing 100872 china KLMM and IAM AMSS Chinese Academy of Sciences Beijing China School of information Renmin University of China Beijing China

Applying the Riemann-Roch theorem,we calculate the dimension of a kind of mero- morphicλ-differentials’ space on compact Riemann *** we also construct a basis of theλ-differentials’ *** the main result,the Cauchy ... 详细信息

关键词： Riemann-Roch theorem λ-differential annulus domain Cauchy integral formula 14C40