Externally induced entanglement amplification in a coherently pumped correlated emission laser (CEL) with parametric amplifier and coupled to a two-mode squeezed vacuum reservoir is presented. The combination of the master equation and stochastic differential equation is employed to investigate the entanglement of the two-mode light generated by the quantum system. The resulting solutions of the correlation properties of noise forces associated with the normal ordering are used to find the mean photon number of the cross-correlated mode and separate cavity modes, quadrature fluctuations, smallest eigenvalue of the symplectic matrix, and photon number correlation function. It is found that pumping atoms from the lower energy state to excited state results in a robust entanglement that remains in its maximum strength over a wide range of the strong classical driving radiation. The introduction of the nonlinear crystal into the linear cavity, and coupling the system to the two-mode squeezed vacuum environment lead to a significant enhancement of entanglement of the cavity light. The enhanced entanglement is quantified employing logarithmic negativity, Cauchy–Schwarz inequality, and Duan et al. criteria. It has been observed that an intense light can be produced where the entanglement is strong.

中文翻译：

---

具有参量放大器和压缩真空的CEL中增强的CV纠缠量化

提出了在带参量放大器的相干泵浦相关发射激光器（CEL）中的外部感应纠缠放大，并耦合到双模压缩真空容器。利用主方程和随机微分方程的组合来研究量子系统产生的双模光的纠缠。与正态排序相关的噪声力的相关属性的所得解用于查找互相关模式和独立腔模式的平均光子数，正交波动，辛矩阵的最小特征值以及光子数相关函数。发现将原子从低能态泵浦到激发态会导致强烈的纠缠，该纠缠在很宽的经典驱动辐射范围内保持最大强度。将非线性晶体引入线性腔，并将系统耦合至双模压缩真空环境，可大大增强腔内光的纠缠度。使用对数负性，柯西-施瓦兹不等式和Duan等人的方法对增强的纠缠进行量化。标准。已经观察到，在纠缠强的地方可以产生强光。将系统耦合到双模压缩真空环境，可显着增强腔体光的纠缠。使用对数负性，柯西-施瓦兹不等式和Duan等人的方法对增强的纠缠进行量化。标准。已经观察到，在纠缠强的地方可以产生强光。将系统耦合到双模压缩真空环境，可显着增强腔体光的纠缠。使用对数负性，柯西-施瓦兹不等式和Duan等人的方法对增强的纠缠进行量化。标准。已经观察到，在纠缠强的地方可以产生强光。