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Optical waveguides in LiNbO_3.and stoichiometric LiNbO_3.crystals by proton exchange

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Science china(physics,Mechanics & Astronomy) 2008年第10期51卷 1479-1488页

作者： LI ShiLing college of physics and engineering,{3., qufu 273165, china School of physics and Microelectronics, Shandong university, Jinan 250100, china college of physics and engineering Qufu Normal University Qufu China School of physics and Microelectronics Shandong University Jinan China

The formation of optical planar waveguides in LiNbO3.and stoichiometric LiNbO3.crystals by proton exchange was reported. The prism-coupling method was used to characterize the dark-line spectroscopy at the wavelength of 63. and 153. nm, re-spectively. The mode optical near-field outputs from proton-exchanged LiNbO3.and SLN waveguides at 63. nm were presented. The mode field from stoichiometric LiNbO3.(SLN) waveguide is lighter and more uniform than that from LiNbO3.waveguide, which means the quality of the waveguide in SLN crystal is better than that of the LiNbO3.waveguide. For proton-exchanged LiNbO3.waveguides, the evo-lution of the refractive index profile with annealing was presented. The disorder profiles of Nb atoms in proton-exchanged LiNbO3.waveguides were obtained by Rutherford backscattering/channeling technique. It is shown that the longer the exchange time, the larger the displacement of Nb atoms.

关键词： optical waveguide proton exchange LiNbO3 crystal stoichiometric LiNbO3 crystal

Controlled Quantum N-Party Simultaneous Direct Communication

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Communications in Theoretical physics 2007年第7期48卷 79-82页

作者： XIA Yun-Jie MAN Zhong-Xiao college of physics and engineering,{3. normal university,{3. 273165,china college of physics and engineering Qufu Normal University Qufu 273165 China

In this paper,we propose a controlled quantum N-party simultaneous direct communication protocolwith single-qubit *** users can simultaneously exchange their secret messages in a set of devices withthe control of a **... 详细信息

关键词： direct communication N-party simultaneous

A generalized Weyl-Wigner quantization scheme unifying P-Q and Q-P ordering and Weyl ordering of operators

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Chinese physics B 2012年第6期21卷 207-212页

作者：王继锁范洪义孟祥国 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology College of Physics and EngineeringQufu Normal University Department of physics Liaocheng University Department of physics Shanghai Jiao Tong University

By extending the usual Wigner operator to the s-parameterized one as 1/4π2 integral （dyduexp [iu（q-Q）＋iy（p-P）＋is/2yu]） from n=- ∞ to ∞ with s beng a,real parameter,we propose a generalized Weyl quantization scheme which accompanies a new generalized s-parameterized ordering *** rule recovers P-Q ordering,Q-P ordering,and Weyl ordering of operators in s = 1,1,0 *** it differs from the Cahill-Glaubers’ ordering rule which unifies normal ordering,antinormal ordering,and Weyl *** also show that in this scheme the s-parameter plays the role of correlation between two quadratures Q and *** formula that can rearrange a given operator into its new s-parameterized ordering is presented.

关键词： generalized Wigner operator generalized operator ordering rule bivariate normal dis-tribution

Accurate studies on the full vibrational energy spectra and molecular dissociation energies for some electronic states of N_(2)molecule

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Science china(physics,Mechanics & Astronomy) 2005年第4期48卷 385-398页

作者： REN Weiyi1,2, SUN Weiguo1, HOU Shilin3.& FENG Hao4 1. Institute of physics, college of Chemical engineering, Sichuan {3., Chengdu 610065, china 2. Institute of Theoretical physics, Xihua normal {3., Nanchong 63.002, china 3. Department of physics, china Oceanography {3., Qingdao 266003. china 4. college of physics, Sichuan {3., Chengdu 610065, china Institute of physics College of Chemical Engineering Sichuan University Chengdu China Institute of Theoretical physics Xihua Normal University Nanchong China Department of physics China Oceanography University Qingdao China college of physics Sichuan University Chengdu China

It is usually very difficult to directly obtain molecular dissociation energy De and all accurate high-lying vibrational energies for most diatomic electronic states using modern experimental techniques or quantum theories, and it is also very difficult to give accurate analytical expression for diatomic molecular dissociation energy. This study proposes a new analytical formula for obtaining accurate molecular dissociation energy based on the LeRoy and Bernstein’s energy expression in dissociation limit. A set of full vibrational energy spectra for some electronic states of N2 molecule are studied using the algebraic method (AM) suggested recently, and the corresponding accurate molecular dissociation energies are evaluated using the proposed new formula and high-lying AM vibrational energies. The results show that the AM spectra and the new theoretical dissociation energies agree excellently with experimental data, and thereby providing a new physical approach to generating accurate dissociation energies for electronic states of diatomic molecules.

关键词： vibrational energy, dissociation energy, nitrogen molecule, algebraic method.

The Interaction Programming Problem

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Journal of Systems Science and Systems engineering 2001年第2期13卷 173-184页

作者： LI Rong-sheng 1, CHENG Ying 21.Institute of Operations Research, qufu normal university, qufu 273165,china2.Mathematics Department, Heze Teachers {3., Heze 274015, china Institute of Operations Research Qufu Normal UniversityQufu 273165 China Mathematics Department Heze Teachers CollegeHeze 274015 China

Based upon the research to the economic equilibrium problems,we present a kind of new mathematical programming problem——interaction programming problem (abbreviated by IPP). The IPP is composed of two or multiple parametric programming problems which is interrelated with each other. The IPP reflects the equality and mutual benefit relationship between two (or among multiple) economic planners in an economic system. In essence, the IPP is similar to the generalized Nash equilibria (GNE) game which has been given several names in the literature: social equilibria games, pseudo-Nash equilibria games, and equilibrium programming problems. In this paper, we establish the mathematical model and some basic concepts to the IPP. We investigate the structure and the properties of the *** also give a necessary and sufficient conditions for the existence of the equilibrium points to a kind of linear IPP.

关键词： Interaction programming problem equilibrium points partial solutions optimal solutions

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,{3. 2 college of physics and Information engineering,Henan normal university,Xinxiang 453.02,{3. 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

A Convergent Algorithm for Continuously Optimal Location Problem

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Systems Science and Systems engineering 1999年第3期9卷 378-384页

作者： MENG Ling\|he\+1\ \ SHI Zhen\|jun\+2\ \ WANG Chang\|yu\+3.1. Qingdao Educational college, Qingdao 266001, china 2. Institute of Operations Research, qufu normal university,{3., china 3. Institute of Applied Mathematics, Academia Sinica, B

In this paper, the continuously optimal location problem is considered. The strong convexity of the objective function, the Lipschitz continuity of the gradient of the objective function are proved. Furthermore, a variant of conjugate gradient method for continuously optimal location problem is presented and its global convergence is analyzed.

关键词： continuously optimal location problem variant of conjugate gradient method steplength global convergence

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,{3. 2 college of physics and Information engineering,Hebei normal university,Shijiazhuang 050016,{3. 3.Hebei Advanced Thin Films Laboratory,Shijiazhuang 050016,{3. college of Mathematics and Information Science Hebei Normal University Shijiazhuang China college of physics and Information engineering Hebei Normal University Shijiazhuang China Hebei Advanced Thin Films Laboratory Shijiazhuang 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

On the Star Chromatic Number of Graph Products

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Journal of Systems Science and Systems engineering 2001年第2期13卷 244-246页

作者： XU Chuan-liang 1, WANG Yi-ju 21.Rizhao Vocational Technique college, Rizhao 276800, china2.Institute of Operations Research, qufu normal university,{3., china Rizhao Vocational Technique college Rizhao 276800 China Institute of Operations Research Qufu Normal UniversityQufu 273165 China

The star chromatic number of a graph was introduced by A. Vince, which is a natural generalization of the chromatic number of a graph. In this paper, the star chromatic numbers of graph products GH are discussed... 详细信息

关键词： star-chromatic number graph product independent set