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A Bright Entanglement and Squeezing Generated by an External Pumping Radiation in a Correlated Emission Laser
International Journal of Optics ( IF 1.7 ) Pub Date : 2020-09-02 , DOI: 10.1155/2020/3823916
Chimdessa Gashu 1
Affiliation  

The quantum and statistical properties of light generated by an external classical field in a correlated emission laser with a parametric amplifier and coupled to a squeezed vacuum reservoir are investigated using the combination of the master and stochastic differential equations. First, the solutions of the cavity-mode variables and correlation properties of noise forces associated to the normal ordering are obtained. Next, applying the resulting solutions, the mean photon number of the separate cavity modes and their crosscorrelation, smallest eigenvalue of the symplectic matrix, mean photon number, intensity difference fluctuation, photon number variance, and intensity correlation are derived for the cavity-mode radiation. The entanglement produced is studied employing the logarithmic negativity criterion. It is found that pumping atoms from the lower energy state to excited state, introducing the nonlinear crystal into the cavity and coupling the system to a biased noise fluctuation, generate a bright and strong squeezing and entanglement with enhanced statistical properties although the atoms are initially in the ground state.

中文翻译:

相关发射激光器中外部泵浦辐射产生的明亮纠缠和压缩

使用主微分方程和随机微分方程的组合,研究了外部经典场在带参量放大器的相关发射激光器中由外部经典场产生并耦合到压缩真空容器的光的量子和统计性质。首先,获得了腔模变量的解和与正常排序相关的噪声力的相关特性。接下来,应用所得的解,导出腔模辐射的独立腔模的平均光子数及其互相关,辛矩阵的最小特征值,平均光子数,强度差波动,光子数方差和强度相关性。使用对数负性准则研究产生的纠缠。
更新日期:2020-09-02
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