在Jaynes－Cummings模型中压缩真空初态场位相演化特性

应用Ｐｅｇｇ－Ｂａｒｎｅｔｔ位相理论，研究了Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型（Ｊ－Ｃ模型）中压缩真空初态场位相演化特性，具体计算了弱压缩条件下，场的位相几率分布函数及位相涨落，给出了在极坐标中位相几率分布演化曲线，讨论了原子与场相互作用对场的位相性质的影响。     

附加克尔介质Jaynes—Cummings模型场的位相特性

运用Pegg-Barnett厄米位相公式,研究了附加克尔(Kerr)介质Jaynes-Cummings(J-C)模型场的位相特性.具体讨论了场的位相概率分布、厄米位相算符的期待值以及位相的涨落,通过与标准J-C模型作比较,讨论了克尔介质与模场的非线性相互作用对场位相特性的影响.     

依赖强度耦合J-C模型中场的位相特性

应用Pegg-Barnett位相理论研究了依赖强度耦合JC模型中场位相的动力学和统计性质.在一定条件下,场可展示锁相和位相压缩效应以及保持光子数-位相最小确定态.     

在Jaynes—Cummings模型中压缩真空初态场位相演化特性

应用Ｐｅｇｇ－Ｂａｒｎｅｔｔ位相理论，研究了Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型（Ｊ－Ｃ模型）中压缩真空初态场位相演化特性，具体计算了弱压缩条件下，场的位相几率分布函数及位相涨落，给出了在极坐标中位相几率分布演化曲线，讨论了原子与场相互作用对场的位相性质的影响。     

Jaynes－Cummings模型中辐射场的振幅N次方压缩特性

本文研究了一初始处于激发态的二能级原子与相干态光场相互耦合的Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型中场的振幅Ｎ次方压缩特性，给出了其压缩度随光场的初始平均光子数和压缩阶数的变化规律。     

双光子Jaynes—Cummings模型中初始原子相干性对辐射场...

本文研究了任意初态的双光子Jaynes-Cummings模型的一般演化规律,着重于分析初始原子相干性对辐射场压缩行为的影响,作为例子,讨论了一个任意初态的二能级原子与真空态和相干态光场相互作用时辐射场的压缩.数值计算了各种条件下辐射场压缩的时间演化.     

双光子Jaynes—Cummings模型中的Schoreodinger—Cat态及其演化特性

文章采用密度算符间的距离充分率证了双光子Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型在初始相干光场较强时（ｎ≥１）在某些特定时刻（ｇｔ＝（２ｍ＋１）π／４，ｍ＝０，１，２，．．．）腔场演化为振幅相同而位相差为π／２或３π／２的两个相干态的叠加态，即Ｓｃｈｒｏｅｄｉｎｇｅｒ－Ｃａｔ态，给出了Ｓｃｈｒｏｅｄｉｎｇｅｒ－Ｃａｔ态的演化图象。     

双模双光子Jaynes—Cummings模型中内在相干性的解除

给出了受Ｍｉｌｂｕｒｎ方程控制的双模双光子Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型的精确解。由于内在消相干性的存在，原子反转以及双模光场的平均光子数随时间演化而衰减，同时光子的反聚束效应及双模光场的相干性也受到内在消相干性的影响。     

Properties of Linear Entropy in k-Photon Jaynes-Cummings Model with Stark Shift and Kerr-Like Medium

The time evolution of the linear entropy of an taking into consideration Stark shift and Kerr-like medium. atom in k-photon daynes-Cummings model is investigated The effect of both the Stark shift and Kerr-like medium on the linear entropy is analyzed using a numerical technique for the field initially in coherent state and in even coherent state. The results show that the presence of the Kerr-like medium and Stark shift has an important effect on the properties of the entropy and entanglement. It is also shown that the setting of the initial state plays a significant role in the evolution of the linear entropy and entanglement.     

高Q克尔介质腔中依赖强度耦合的J-C模型中光场相位特性

应用Pegg-Barnett相位理论研究了被克尔介质包围的依赖强度耦合的J-C模型中光场相位演化特性, 结果发现, 原子-光场的耦合常数和克尔介质-光场的耦合常数将导致相位的涨落明显增大, 在原子初始处于非相干性激发时光场的频率也会发生漂移     

有机材料EnBOD的放大自发发射性能研究

在紫外脉冲激光泵浦条件下,研究了有机材料EnBOD的放大自发发射(ASE)性能.EnBOD的甲苯稀溶液样品具有较窄的吸收和荧光光谱,主峰分别位于508 nm和527 nm.其ASE效率随着溶液浓度而变化,浓度为0.008 mol·L-的EnBOD样品具有最高的ASE效率,达到22.6％.其ASE主峰位于542 nm,阈值约为29.5 kW·cm-2.阈值后的ASE半宽约为12.4 nm.经紫外脉冲激光20万次泵浦后,ASE的光强衰减为初始强度的61.2％.结果表明EnBOD是一种ASE阈值较低、光稳定性良好的激光材料.     

Geometric Phase in a Generalized Time-Dependent Jaynes-Cummings Model

By using the Lewis–Riesenfeld invariant theory, we have studied the dynamical and the geometric phases in a generalized time-dependent Jaynes-Cummings model. It is found that the geometric phases in a cycle case have nothing to do with the frequency of the electromagnetic wave, the energy difference between two levels of the atom, and the coupling strength between the atom and the light field.     

Geometric Phase in a Time-Dependent A-Type Jaynes-Cummings Model

By using the Lewis-Riesenfeld invariant theory, we have studied the dynamical and the geometric phases in a generalized time-dependent A-type Jaynes Cummings model. We lind that, compared with the dynamical phases, the geometric phases in a cycle case are independent of the frequency of the photon field, the coupling coefficient between photons and atoms, and the atom transition frequency. It is pointed out that the geometric phases in a cycle ease can be measured under the case of a stronger time-dependent photon field and a stronger coupling photon-atom system. On the other hand, the geometric phases of the model may be measured in the composition of cold atoms.     

相位损耗腔中大失谐Jaynes-Cummings模型中熵的演化

研究了一位于相位损耗腔中大失谐下二能级原子与相干态场相互作用系统中，光场线性熵、原子线性熵以及光场－原子系统线性熵的演化，讨论了原子初始状态和光场的平均光子数对各线性熵的影响，结果表明，光场线性熵和原子线性熵的演化都较强地依赖于原子初始状态，而系统线性熵的演化与原子初始状态无关。由于光场平均光子数的增加，光场、原子和系统的线性熵都会增加。     

Geometric Phase in a Two Energy Level Jaynes-Cummings Model with Imaginary Photon Process

By using the Lewis–Riesenfeld invariant theory, we have studied the dynamical and the geometric phases in a two energy level Jaynes-Cummings model with imaginary photon process. We find that the geometric phases in a cycle case have nothing to do with the frequency of the photon field, the coupling coefficient between photons and atoms, and the atom transition frequency. If we use the more accuracy device, the geometric phases in the imaginary photon process may be observed, and the geometric phases in this process have the observable physical effect.     

等同双原子Jaynes-Cummings模型的量子特性及系统光谱

在全量子理论的背景下提出两个二能级原子分别与一单模腔场相互作用的系统模型,利用量子主方程和数值模拟计算等方法,研究该体系中腔场平均光子数、Mandel's Q因子及二阶量子相关度在非稳态时的变化规律。此外,对体系中原子及腔场中光谱结构进行了分析。结果表明:减小腔场耗散系数,增大原子间耦合系数,体系量子特性愈加明显。体系光谱呈现出Mollow三重峰结构,且原子辐射谱强度远大于腔场辐射谱强度。当原子跃迁频率与腔场跃迁频率为近共振时,Mollow峰值为三峰中最大值。此外,增大原子与腔场间耦合系数,可增大原子光谱的中峰强度;而增大腔场光谱的中峰强度,则需减小原子与腔场间耦合系数。     

Two-Photon Jaynes-Cummings Model Governed by Milburn Equation with Phase Damping

In this paper, we find an analytic solution of the master equation of a non-resonant two-photon JaynesCummings model (JCM) with phase damping with the help of the super-operator technique. We study the influence of phase damping on non-classical effects in the JCM, such as oscillations of the photon-number distribution, revivals of the atomic inversion, and sub-Possion photon statistics. It is demonstrated that the phase damping suppresses the revivals of the atomic inversion and non-classical effects of the cavity field in the JCM.