In this paper the method of density matrix is used to describe two coupled modes.
采用密度矩阵方法描述了两模反向耦合。
A method calculating one body density matrix of nucleus in the mean field shell model is proposed.
提出平均场壳模型下原子核单体密度矩阵的一种计算方法，验证该方法的可靠性。
The spectrum density matrix of the proposed model was constructed and its properties are investigated.
在此基础上进行了谱分析，得到了该模型的谱密度、互谱密度和双互谱密度。
Using the density matrix theory describes the absorption and dispersion properties of the detecting light.
用密度矩阵理论描述了系统对探测光的吸收和色散性质。
The method of density matrix renormalization-group is applied to obtain logarithmic behavior of the entropy.
我们利用密度矩阵重整化群方法来研究熵的对数行为。
On the basis of force density matrix of cable element, a force density matrix of triangle membrane element is introduced.
本文在已有的索单元力密度矩阵的基础上推导了三角形膜单元的力密度矩阵。
By using the method of density matrix renormalization group, the ground state entanglement in different systems is studied.
通过密度矩阵重整化群的方法，我们研究了不同系统中的基态纠缠。
The equation of three step photoionization for describing the field and the density matrix as well as the atomic population was derived.
推导了三步光电离的场方程组和原子布居的密度矩阵方程组。
The effects of atomic coherence on fiber amplifiers pumped by two lasers with different frequences are studied by using density matrix theory.
用密度矩阵的方法从理论上分析了不同频率的两个激光场混合泵浦的光纤放大器中，由光场诱导的原子相干效应。
According to the system density matrix, discussed the evolution of the system entropy with time and photon statistical properties of the system.
根据系统密度矩阵，讨论了系统熵随时间的演化和系统光子统计性质。
An analytic representation for the third-harmonic generation along the well is derived by the density matrix operator theory of the quantum mechanics.
利用量子力学中的密度矩阵算符理论导出了该系统中三次谐波产生的解析表达式。
We introduce some important matrices and their applications in quantum computation and quantum information, including density matrix, unitary matrix, etc.
介绍了量子计算与量子信息中的一些重要的矩阵及其应用，包括密度矩阵、酉矩阵等。
Since most chemical reactions are carried out in the liquid phase, the density matrix theory has been widely used in the study of molecular reaction dynamics.
由于多数化学反应在液相中进行，故密度矩阵理论被广泛地应用于研究液相分子反应动力学。
We have found out the equation of density matrix evolution of the two-level atomic system in the classic electromagnetism field. The Law of coherence of the state is obtained.
求解了经典电磁场中二能级原子系统的密度矩阵演化方程，得到了系统状态的相干特性。
A general connection between the reduced fidelity susceptibility and quantum phase transitions is given in terms of the relation between reduced density matrix and ground-state energy.
根据约化密度矩阵与基态能量之间的关系，我们给出了约化保真率和量子相变之间的一般关系。
In this article, we present a design method of the SLR pulse. Subsequently, based on density-matrix theory, computer simulations are used to show the excitation profiles of the designed SLR pulses.
首先介绍了SLR脉冲设计思想，然后基于密度矩阵理论，应用计算机模拟方法对所设计脉冲的激发带宽进行模拟。
The semiclassical density-matrix theory with carrier intraband relaxation broading is described.
本文简明地描述了由载流子带内弛豫加宽的半经典的密度矩阵理论。
In this paper, the time-resolved degenerate four-wave mixing in two-level system is treated rigorously with the density-matrix method.
本文用密度矩阵方法严格处理了在共振情况下二能级系统时间分辨简并四波混频问题。
In chapter 2, we gave the nearly equispaced Ladder-type system model and the density-matrix equations in a rotating frame after taking the effects of spontaneously induced coherence into account.
第二章给出了自发辐射诱导相干影响下的近等间隔的阶梯型三能级系统模型及其密度算符的运动方程的具体推导。
In chapter 2, we gave the nearly equispaced Ladder-type system model and the density-matrix equations in a rotating frame after taking the effects of spontaneously induced coherence into account.
第二章给出了自发辐射诱导相干影响下的近等间隔的阶梯型三能级系统模型及其密度算符的运动方程的具体推导。
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