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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

Quantum secret sharing between multiparty and multiparty with four states

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Science china(physics,Mechanics & Astronomy) 2007年第5期50卷 572-580页

作者： YAN FengLi1, GAO Ting2 & LI YouCheng1 1 college of physics and information engineering, hebei normal university, shijiazhuang 050016, china 2 college of Mathematics and information Science, hebei normal university, shijiazhuang 050016, china college of physics and information engineering Hebei Normal University Shijiazhuang China college of Mathematics and information Science Hebei Normal University Shijiazhuang China

A protocol of quantum secret sharing between multiparty and multiparty with four states was presented. It was shown that this protocol can nullify the Trojan horse attack with a multi-photon signal, the fake-signal attack with Einstein-Podolsky- Rosen pairs, the attack with single photons, and the attack with invisible photons. In addition, the upper bounds of the average success probabilities were given for dishonest agent eavesdropping encryption using the fake-signal attack with any two-particle entangled states.

关键词： quantum secret sharing, security, Einstein-Podolsky-Rosen pairs

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 China Max-Planck-Institut für Quantenoptik Garching Germany college of physics and information engineering Hebei Normal University Shijiazhuang 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

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 河北 Shijiazhuang 050061

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.

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 Department of physics 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

Bloch constant of holomorphic mappings on the unit polydisk of C^n

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Science china Mathematics 2008年第4期51卷 652-659页

作者： WANG JianFei~(1+) LIU TaiShun~2 1 college of Mathematics and physics information engineering Zhejiang normal university Jinhua 321004,china 2 Department of Mathematics Huzhou Teachers college Huzhou 313000 china college of Mathematics and physics Information Engineering Zhejiang Normal University Jinhua China Department of Mathematics Huzhou Teachers College Huzhou China

In this paper,we give a definition of Bloch mappings defined in the unit polydisk D^n, which generalizes the concept of Bloch functions defined in the unit disk *** is known that Bloch theorem fails unless we have some restrictive assumption on holomorphic mappings in several complex *** shall establish the corresponding distortion theorems for subfamiliesβ(K)andβ_(loc)(K) of Bloch mappings defined in the polydisk D^n,which extend the distortion theorems of Liu and Minda to higher *** an application,we obtain lower and upper bounds of Bloch constants for various subfamilies of Bloeh mappings defined in D^*** particular,our results reduce to the classical results of Ahlfors and Landau when n=1.

关键词： Bloch constant Bloch mapping univalent ball critical point Julia lemma locally biholomorphic mapping Landau constant

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

Transition of Growth Mode in Homoepitaxy on Metal Surface

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Communications in Theoretical physics 2007年第7期48卷 175-178页

作者： WU Li-Li LU Hang-Jun WU Feng-Min college of Mathematics and physics,information engineering,Zhejiang normal university,Jinhua 321004,china college of Mathematics and physics Information Engineering Zhejiang Normal University

The process of the multilayer growth of Pt on Pt(111)is studied by using a Monte Carlo model with realisticphysical *** effects of the substrate temperature,the ES barrier,and the deposition rate on the growthmode have been *** transitions of the surface roughness from oscillatory to non-oscillatory behaviorand then back to oscillatory behavior are observed while increasing the substrate temperature from 270 K to 620 *** found that the growth mode depends strongly on ES barrier over the whole temperatures and the deposition rate ofatoms effectively affects the growth *** simulation results are consistent with many experimental observationsfor homoexpitaxy on a Pt(111)substrate.

关键词： growth mode transition Monte Carlo simulation surface roughness oscillation