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Quantum secret sharing between m-party and n-party with six states

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Science China(physics,Mechanics & Astronomy) 2009年第8期52卷 1191-1202页

作者： GAO Ting1,YAN FengLi2,3 & LI YouCheng2,3 1 college of Mathematics and information Science,hebei normal university,shijiazhuang 050016,China 2.college of physics and information engineering,hebei normal university,shijiazhuang 050016,China 3 hebei Advanced Thin Films Laboratory,shijiazhuang 050016,China college of Mathematics and information Science Hebei Normal University Shijiazhuang 050016 China college of physics and information engineering Hebei Normal University Shijiazhuang 050016 China hebei Advanced Thin Films Laboratory Shijiazhuang 050016 China

A quantum secret sharing scheme between an m-party group and an n-party group is proposed using three conjugate bases.A sequence of single photons,each of which is prepared in one of the six states,is used directly to encode classical information in the quantum secret sharing *** this scheme,each of all m members in group 1 chooses randomly his/her own secret key individually and independently,and directly encodes his/her respective secret information on the states of single photons via unitary operations,then the last one sends 1/n of the resulting qubits to each member of group *** measuring their respective qubits,all members in group 2 share the secret information shared by all members in group *** renders impossible a Trojan horse attack with a multi-photon signal,a fake-signal attack with EPR pairs,an attack with single photons,and an attack with invisible *** give the upper bounds on the average success probabilities for dishonest agent eavesdropping encryption using the fake-signal attack with any two-particle entangled states.

关键词： quantum secret sharing security EPR pairs

Probabilistic teleportation via a non-maximally entangled GHZ state

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Chinese Science Bulletin 2010年第10期55卷 902-906页

作者： YAN FengLi1,2 & YAN Tao1,2 1 college of physics Science and information engineering,hebei normal university,shijiazhuang 050016,China 2 hebei Advanced Thin Films Laboratory,shijiazhuang 050016,China college of physics Science and information engineering Hebei Normal University Shijiazhuang China hebei Advanced Thin Films Laboratory Shijiazhuang China

We present a scheme for probabilistic teleportation via a non-maximally entangled GHZ *** teleportation will succeed with a calculable *** teleportation process requires the sender to make a generalized Bell state measurement,the cooperator to perform a generalized X basis measurement,and the receiver to perform a collective unitary transformation and to make a measurement on an auxiliary *** success probability of the teleportation is *** also obtain the maximum of the success probability of the teleportation.

关键词：成功概率 GHZ态隐形传送纠缠 Bell态测量量子隐形传态传输过程辅助粒子

Optimal controlled teleportation via several kinds of three-qubit states

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Science China(physics,Mechanics & Astronomy) 2008年第10期51卷 1529-1556页

作者： GAO Ting1,2, YAN FengLi2,3 & LI YouCheng3 1 college of Mathematics and information Science, hebei normal university, shijiazhuang 050016, China 2 Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany 3 college of physics and information engineering, hebei normal university, shijiazhuang 050016, China college of Mathematics and information Science Hebei Normal University Shijiazhuang 050016 China Max-Planck-Institut für Quantenoptik Hans-Kopfermann-Str. 1 D-85748 Garching Germany college of physics and information engineering Hebei Normal University Shijiazhuang 050016 China

The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states... 详细信息

关键词： controlled teleportation three-qubit state maximal probability

Non-universal Gauge Bosons Z'and the Process e~+e~- →f

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Communications in Theoretical physics 2004年第3期41卷 419-424页

作者： YUE Chong-Xing~1 WANG Shun-Zhi~2 1 Department of physics,Liaoning normal university,Dalian 116029,China 2.college of physics and information engineering,Henan normal university,Xinxiang 453002,China Department of physics Liaoning Normal University Dalian 116029 college of physics and information engineering Henan Normal University Xinxiang 453002

Introduetion Altl、ough the standard model(SM)that bases on thega、lge gro、ip SU:(2)xU(1)has been sueeessful in de-seribing the Physies of eleetroweak interaetions,the meeh-anisn,of the eleetroweak symmetry breaking(... 详细信息

关键词： non-universal gauge bosons cross section TC2 models

First-principles study of the formation and electronic structure of a conductive filament in ZnO-based resistive random access memory

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Chinese physics B 2014年第12期23卷 412-417页

作者：赵晶董静雨任书霞张礼勇赵旭陈伟 Key Laboratory of Advanced Films of hebei Province College of Physics Science & Information EngineeringHebei Normal University Department of physics and Electrical engineering Handan College School of Material Science and engineering Shijiazhuang Tie Dao University

Oxygen vacancy plays a crucial role in resistive switching. To date, a quantitative study about the distribution of the oxygen vacancies and its effect on the resistive switching has not yet been reported. In this study, we report our first-principles calculations in Zn O-based resistive switching memory grown on a Pt substrate. We show that the oxygen vacancies prefer to be located in the Zn O（0001） plane, i.e. in the direction parallel to the film surface in the preparation process. These oxygen vacancies drift easily in the film when a voltage is applied in the SET process and prefer to form a line defect perpendicular to the film surface. An isolated oxygen vacancy makes little contribution to the conductivity of Zn O,whereas the ordering of oxygen vacancies in the direction perpendicular to the film surface leads to a dramatic enhancement of the conductivity and thus forms conductive filaments. The semiconducting characteristics of the conductive filaments are confirmed experimentally.

关键词： first-principles calculations resistive switching conductive filament oxygen-vacancy ordering

THE EXISTENCE OF SOLUTIONS OF NONLINEAR BOUNDARY VALUE PROBLEMS INVOLVING THE p-LAPLACIAN OPERATOR IN L^s-SPACES

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Journal of Systems Science & Complexity 2005年第4期18卷 511-521页

作者： WEI Li (School of Mathematics and Statistics, hebei university of Economics and Business, shijiazhuang 050061, China Institute of Applied Mathematics and Mechanics, Ordnance engineering college, shijiazhuang 050003, China. ZHOU Haiyun (Institute of Applied Mathematics and Mechanics, Ordnance engineering college, shijiazhuang 050003, China Institute of Mathematics and information Science, hebei normal university, shijiazhuang 050016, China. School of Mathematics and Statistics Hebei University of Economics and Business Shijiazhuang 050061 China

By using the perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we study the abstract results on the existence of a solution u ∈ L^s （Ω） of nonlinear boundary value problems involving the p-Laplacian operator, where 2≤ s〈＋∞, and 2N/N＋1 〈 p ≤ 2 for N（≥ 1） which denotes the dimension of R^N. To obtain the result, some new techniques are used in this paper. The equation discussed in this paper and our methods here are extension and complement to the corresponding results of L. Wei and Z. He.

关键词： Maximal monotone operator accretive mapping hemi-continuous mapping p-Laplacian operator nonlinear boundary value problem.

Quantum nonlocality of generic family of four-qubit entangled pure states

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Chinese physics B 2015年第7期24卷 83-87页

作者：丁东何英秋闫凤利高亭 college of physics Science and information engineering Hebei Normal University Department of Basic Curriculum North China Institute of Science and Technology college of Mathematics and information Science Hebei Normal University

We directly introduce a Bell-type inequality for four-qubit systems. Using the inequality we investigate quantum nonlocality of a generic family of states ｜Gabcd〉[Phys. Rev. A 65 052112.2002）] and several canonical four-qubit entangled states. It has been demonstrated that the inequality is maximally violated by the so called ＂four-qubit the maximally entangled state ｜Gm〉＂ and it is also violated by four-qubit W state and a special family of states ｜Gab00〉. Moreover, a useful entanglement-nonlocality relationship for the family of states ｜Gab00〉is derived. Finally, we present a scheme of preparation of the state ｜Gm〉with linear optics and cross-Kerr nonlinearities.

关键词： quantum nonlocality Bell-type inequality quantum entanglement

Identification of Semen Celosiae and Cockscomb Flower Using Continuous Wavelet Transform with FTIR

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稀有金属材料与工程 2006年第S3期 614-616页

作者： Changjiang Zhang~1 Cungui Cheng~2 (1.college of Mathematics,physics and information engineering,Zhejiang normal university,Jinhua 321004,China) (2.college of Chemistry and Life Science,Zhejiang normal university,Jinhua 321004,China)

Infrared spectra of semen celosiae and cockscomb flower can be obtained directly,quickly and accurately employing Fourier transform infrared spectroscopy (FTIR) with OMN1 *** wavelet transform (CWT) is employed to zoom in local region of infrared spectra of semen celosiae and cockscomb *** difference of infrared spectra between semen celosiae and cockscomb flower is greatly *** rate is greatly improved. Daubechies wavelet is used as mother *** is implemented to the infrared spectra of semen celosiae and cockscomb *** difference between semen celosiae and cockscomb flower is observed at all scales in the continuous wavelet *** optimal scale is selected to identify semen celosiae and cockscomb *** results show that it is effective to apply CWT on the basis of FTIR to identify traditional Chinese medicinal materials,which are the same general but different species.

关键词： semen celosiate cockscomb flower FTIR CWT Chinese medical material

Robustness and breakup of the spiral wave in a two-dimensional lattice network of neurons

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Science China(physics,Mechanics & Astronomy) 2010年第4期53卷 672-679页

作者： MA Jun 1,2, TANG Jun 2 , ZHANG AiHua 3 & JIA Ya 2 1 Department of physics, Lanzhou university of Technology, Lanzhou 730050, China 2 Department of physics, Central China normal university, Wuhan 430079, China 3 college of Electrical and information engineering, Lanzhou university of Technology, Lanzhou 730050, China 1. Department of physics Lanzhou University of Technology Lanzhou 730050 China2. Department of Physics Central China Normal University Wuhan 430079 China3. College of Electrical and Information Engineering Lanzhou University of Technology Lanzhou 730050 China

The robustness and breakup of spiral wave in a two-dimensional lattice networks of neurons are investigated. The effect of small- world type connection is often simplified with local regular connection and the long-range connection with certain probability. The network effect on the development of spiral wave can be better described by local regular connection and changeable long-range connection probability than fixed long-range connection probability because the long-range probability could be changeable in realistic biological system. The effect from the changeable probability for long-range connection is simplified by multiplicative noise. At first, a stable rotating spiral wave is developed by using appropriate initial values, parameters and no-flux boundary conditions, and then the effect of networks is investigated. Extensive numerical studies show that spiral wave keeps its alive and robust when the intensity of multiplicative noise is below a certain threshold, otherwise, the breakup of spiral wave occurs. A statistical factor of synchronization in two-dimensional array is defined to study the phase transition of spiral wave by checking the membrane potentials of all neurons corresponding to the critical parameters(the intensity of noise or forcing current)in the curve for factor of synchronization. The Hindmarsh-Rose model is investigated, the Hodgkin-Huxley neuron model in the presence of the channel noise is also studied to check the model independence of our conclusions. And it is found that breakup of spiral wave is easier to be induced by the multiplicative noise in presence of channel noise.

关键词： spiral wave factor of synchronization breakup multiplicative noise robustness