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Simpler criterion and flexibility of operation complexity for perfectly teleporting arbitrary n-qubit state with 2.-qubit pure state

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Science china(physics,Mechanics & Astronomy) 2010年第11期53卷 2069-2073页

作者： ZUO XueQin 1,LIU YiMin 2.ZHANG ZiYun 1,ZHANG Wen 1 & ZHANG ZhanJun 1 1 Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of china,School of physics & Material Science,Anhui {2.,Hefei 2.0039,china 2.department of physics,shaoguan {2.,shaoguan 512.05,china Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of china School of Physics & Material Science Anhui University Hefei China department of physics Shaoguan University Shaoguan China

A criterion for whether a pure-state quantum channel consisting of 2. qubits averagely distributed between two nodes can be used for perfectly teleporting an arbitrary n-qubit state via Bell-state measurements is ***,a matrix is composed of the coefficients of the known channel state and whether the matrix is unitary decides the *** the criterion is apparently different from the usual standard entanglement criterion (USEC),its applicability is enlarged and verified by other measuring *** analyses have further simplified the resultant criterion,so that a much simpler criterion than the USEC is conclusively ***,the flexibility of operation complexity between the non-unitary measurements and the unitary reconstructions is explicitly exhibited.

关键词： quantum teleportation criterion flexibility of operation complexity measuring bases reconstruction

Perfect teleportation of an arbitrary three-qubit state with the highly entangled six-qubit genuine state

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Science china(physics,Mechanics & Astronomy) 2010年第11期53卷 2059-2063页

作者： YIN XiaoFeng 1,LIU YiMin 2.ZHANG ZiYun 1,ZHANG Wen 1 & ZHANG ZhanJun 1 1 Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of china,School of physics & Material Science,Anhui {2.,Hefei 2.0039,china 2.department of physics,shaoguan {2.,shaoguan 512.05,china Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of china School of Physics & Material Science Anhui University Hefei China department of physics Shaoguan University Shaoguan China

The perfect teleportation of an arbitrary three-qubit state with the highly entangled six-qubit genuine state introduced by Borras et al.(***.A: ***.40 (2.07) 13407) is *** appropriate measuring bases the sender can take and the corresponding unitary operations the receiver should execute in terms of the sender’s measurement outcome are explicitly *** flexibility between the measurement difficulty and the reconstruction difficulty is ***,discussions and comparisons between our scheme and the recent incomplete scheme (Choudhury et al,***.A: ***.42.(2.09) 115303) are made.

关键词： quantum teleportation highly entangled six-qubit genuine state measuring bases reconstruction operation flexibility

A Pseudo-Spectral Approximation for theSystem of Generalized Zakharov Equations

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Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 3-5页

作者： Shaomei FANG(department of Mathematics, shaoguan university,{2., china)E-mail: bnlu@*** department of Mathematics Shaoguan University Shaoguan 512005 China

IntroductionInthispaper,weareconcernedwiththetheoreticalanalysisofthefullydiscretepseudospectraJapproximationofthesystemofgenerajizedZakharovequationswithperiodicinitialconditionsbywherei=M,q(.)denotesacontinuousreal-... 详细信息

关键词： Zakharov equation pseudo-spectral approximation

Long time behavior for damped generalized coupled nonlinear wave equations. Ⅱ.Unbounded domain

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Communications in Nonlinear Science and Numerical Simulation 2001年第2期6卷 107-110页

作者： Shaomei FANG and Boling GUO department of Mathematics, shaoguan university,{2., china Graduate School, china Academy of Engineering physics, Beijing 100088, china Center for Nonlinear Studies, Institute of Applied physics and Computational department of Mathematics Shaoguan University Shaoguan 512005 China Graduate School China Academy of Engineering Physics Beijing 100088 China Center for Nonlinear Studies Institute of Applied Physics and Computational mathematics Beijing 100088 China

In this paper, by using a priori estimates in the weighted space, the existence of the global attractor for the damped generalized coupled nonlinear wave equations in an unbounded domain is obtained.

关键词： unbounded domain weighted space attractor

Density-functional formula for strongly correlated systems

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Progress in Natural Science:Materials International 2005年第5期15卷 395-401页

作者： WANG Huaiyu1*, HAN Rushan2.and CHEN Nanxian1(1. department of physics, Tsinghua {2., Beijing 100084, china 2. department of physics, Peking {2., Beijing 100871, china) Dept. of Phys. Tsinghua Univ. Beijing 100084 China Dept. of Phys. Peking Univ. Beijing 100871 China

Density functional method is applied for strongly correlated systems. Based on the assumption that the systems are composed of electrons in singly-occupied orbitals and those in doubly-occupied orbitals, a set of self-consistent equations are obtained by standard variation procedure. The equations consist of two parts. One part is to solve the wave functions of the electrons in singly-occupied orbitals and the other is to solve the wave functions of the electrons in doubly-occupied orbitals. The physical meanings of the terms appearing in the equations are discussed.

关键词： density-functional theory strongly correlated systems doubly-occupied orbital two-particle wave function self-consistent equations.

Direct CP violation in hadronic B decays

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Science china(physics,Mechanics & Astronomy) 2006年第3期49卷 357-366页

作者： HONG Bihai1,2.& Lü Caidian3 1. department of physics, Lishui {2., Lishui 32.000,china 2. department of physics, Shanghai Jiaotong {2., Shanghai 2.0030, china 3. Institute of High Energy physics, Beijing 100049,china department of physics Lishui University Lishui China department of physics Shanghai Jiaotong University Shanghai China Institute of High Energy physics Beijing China

There are different approaches for the hadronic B decay calculations, recently. In this paper, we upgrade three of them, namely factorization, QCD factorization and the perturbative QCD approach based on kT factorization, using new parameters and full wave functions. Although they get similar results for many of the branching ratios, the direct CP asymmetries predicted by them are different, which can be tested by recent experimental measurements of B factories.

关键词： CP violation hadronic B decay factorization.

Stochastic resonance in surface catalytic oxidation of carbon monoxide induced by colored noise

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Science china Chemistry 2004年第2期47卷 106-112页

作者： GONG Yubing1,2. HOU Zhonghuai1 & XIN Houwen1 1. department of Chemical physics, {2. of Science and Technology of china, Hefei 2.002., china 2. department of physics, Yantai Teachers {2., Yantai 2.402., china department of Chemical physics University of Science and Technology of China Hefei China department of physics Yantai Teachers University Yantai China

The dynamical behavior of surface catalytic oxidation reaction of Pt(110)/CO+O2.modulated by colored noise, under the condition of specific temperature, has been investigated when the partial pressure of CO gas is near the supercritical Hopf bifurcation point. By computer simulation the oscillation and stochastic resonance induced by colored noise are observed. The influences of the intensity and correlation time of colored noise on stochastic resonance are discussed. The range of sensitivity of the system to the environmental fluctuation is analyzed.

关键词： colored noise, stochastic resonance, surface catalytic reaction of Pt(110)/CO+O2. supercritical Hopf bifurcation, signal-to-noise ratio (SNR).

Internal noise stochastic resonance in CO oxidation on nm-sized palladium particles

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Science china Chemistry 2005年第5期48卷 395-401页

Based on a stochastic mesoscopic model, the influence of internal noise on the oscillatory kinetics of the catalytic oxidation of CO on nm-sized palladium particles is studied, using the chemical Langevin equations, Poisson approximation algorithm, and exact stochastic simulation algorithm. The reaction rate oscillations are of stochastic nature due to considerable internal noise in such mesoscopic systems. It is found that the performance of the stochastic oscillations undergoes a maximum with the variation of internal noise level for a given CO partial pressure, which demonstrates the occurrence of internal noise stochastic resonance. This phe-nomenon implies that optimal internal noise would favor the reaction rate oscillation of CO oxi-dation on nm particles. Such a phenomenon is robust to the change of external parameters, such as CO pressures.

关键词： nanometer-sized palladium particles, surface catalytic CO oxidation, internal noise, stochastic resonance, chemical Langevin equation.

Anisotropic effect on the vibronic reduction factors

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Chinese Science Bulletin 2006年第21期51卷 2553-2558页

作者： QIU Qing-chun1,2.& QIAO Fen1,2.1. department of physics and IT, Medical College, Shantou {2.,Shantou 515041, china 2. department of physics, Shantou {2., Shantou 515063, china department of physics and IT Medical College Shantou University Shantou China department of physics Shantou University Shantou China

The reduction factors p and q defined by Ham in the Ee JT system and their relation 2.-p=1 have been well accepted and the concept of reduction factors is widely used in the studies of vibronic coupling. However, when the system is under the anisotropic conditions, the reduction factors and their relation will change accordingly. The first-order reduction factors p and q of Ee system were further studied using the method of unitary transformation here. The relation between p and q proposed by Ham was investigated under both conditions of the linear coupling and the anisotropic effects. The result demonstrated that the relation of 2.-p=1 was only correct for the linear vibronic coupling, but not correct when the anisotropic effect was considered. This result suggested that the anisotropic effect influence considerably the reduction factors, and hence the physical properties of materials. Our method could be also applied to other JT systems, especially the highly symmetric JT systems involving C60 molecules.

关键词：电子振动耦合声子交迭 Jahn-Teller效应各向异性