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- Density matrix method 密度矩阵理论
- Off-diagonal elements of density matrix go to zero. 经典定义:密度矩阵非对角元趋于零。
- A method is proposed to construct a localized active functional space from the density matrix of a large system. 报道了从大体系的密度矩阵出发构造定域于指定局部的活性泛函空间的方法和程序。
- By solving the density matrix equations, we gained the susceptibility. 通过求解密度矩阵方程,得到感生极化率。
- Using the method of density matrix, we get the rate equations about electron transport in the mesoscopic system derived form many body schrodinger equation. Makeing using of them, we obtain the spin current and charge current through the systems. 本文利用密度矩阵的方法，由多粒子体系的薛定谔方程，我们得到了微观体系中电子输运的几率方程，从而推导出通过量子点的自旋电流与电荷流的表达式。
- Introduces the transfer matrix method for torsion of circular shaft. 介绍了圆轴扭转时的传递矩阵法。
- Fundamental matrix method is one of the hotspots in computer vision recently. 基础矩阵法是计算机视觉领域的一个新热点。
- A new algorithm, which combined matrix method with iteration method, is pres. 给出了三种新的计算整函数实零点的大范围收敛迭代法。
- In this paper, expound a semiclassical density matrix theory, it was used by Author in theoretical study of miniature optically pumped submillimeter wave laser. 重点论述在小型光泵亚毫米波激光的理论研究中所应用的量子系统的半经典密度矩阵理论。
- The atom's reduced density matrix is calculated when the quantum theory in small system coupled to thermal reservoir is used.The decoherence properties of atom is analyzed. 利用小系统与库耦合行为的量子理论，计算原子约化密度矩阵非对角元，分析原子状态的消相干特性。
- We start from the schrodinger equation, researching on the interaction process of cold atoms system with Raman laser pulse, and then educe the density matrix equation. 第二章推导出了原子与拉曼脉冲激光作用后的能态分布矩阵以及原子在重力场中的传输矩阵。
- When the density matrix of the whole ensemble consisted of system-meter is reduced to the microscopic physical system, the system trend quantum decoherence in nature. 把由系统与仪器组成的系综的密度矩阵约化到被测系统部分，于是自然趋近量子退相干。
- Density Matrices I. Initial Non-Eigenstate Preparation, Evolution, Detection. 19密度矩阵I.;初始非本征态的准备、演化、探试。
- Matrix method is applied in catadiopt rics to calculate the more complex combination of reflecting and refracting elements. 本文介绍了矩阵方法应用于屈光学中较为复杂的反射折射光学系统的计算。
- The achromatic and isochronous relations of the system are obtained with transport matrix method, and the second order effects are discussed. 用传输矩阵方法研究了其消色差和等时性关系，并讨论了系统的二阶效应。
- The achromatic and isochronous relations for the system are obtained by six dimension transport matrix method. 根据六维传输矩阵导出了系统的消色差和等时性关系式。
- Ernst O.G., A finite-element capacitance matrix method for exterior Helmholtz problems,Numer. Math., 75(1996), 175. 李瑞遐;一个扩散问题的自然边界元法与有限元法组合;高校应用数学学报(A辑);13:3(1998);333-341.
- Coherent states of two dimensional asymmetrical harmonic oscillator,which prop- agate in additional octupole deformation potentials, are used to investigate the complexity of the density matrix and the sensitivity against the strength of disturbance. 运用在二维不对称谐振子势加八极形变势中传播的二维不对称谐振子相 干态，研究了不同强度耦合作用下密度矩阵的复杂性及对干扰动强度微小变动 的敏感性。
- From the numerical simulation and the steady-state solution to the density matrix equations, we find that AWI can be realized by choosing theintensities of the pumping and the magnetic fields and the relative phase of the probing and the pumping fields. 从密度矩阵方程出发,对三个态的粒子数进行了数值模拟,并得到了密度矩阵方程的稳态解,由稳态解得到了实现无反转放大的条件。 适当选取泵浦光场的Rabi频率和相干磁场的Lamor频率以及探测光场和泵浦光场之间的相对相位,可以在此系统中实现无反转放大。
- The transmission properties of the structure are studied by eigen matrix method. 运用传输矩阵法研究掺杂电光材料的一维光子晶体的传输特性。
