色散对T-C模型两原子纠缠演化特性的影响  

Influence of Chromatic Dispersion on Evolution of Entanglement in T-C Model of Two-atom

作　　者：王建荣[1] 赖云忠[1] 

机构地区：[1]太原科技大学应用科学学院,太原030024

出　　处：《太原科技大学学报》2009年第4期346-349,共4页Journal of Taiyuan University of Science and Technology

摘　　要：用部分转置矩阵负本征值,研究了两个原子之间存在偶极相互作用的情况下,再加入三阶色散相后,腔中两原子的纠缠演化。结果表明:色散系数取1时对纠缠量的影响和不加色散介质时相比区别不大,但随着色散系数的增大,原子处于纠缠态的时间变短变多,原子的演化周期明显加速。The entanglement evolutions of the dipole affected mutually and the cavity two atomic after joining three step chromatic dispersion is studied, which mainly uses the part transposed matrix negative eigenvalue. The final result indicates when the dispersion coefficient takes one, the influence of dispersion on the entanglement is not much ＇different compared with that without dispersion medium. With the dispersion coefficient＇s enlargement, the time of being in entanglement condition becomes shorter, and the evolved drequency of atoms obviously acceleraten.

关 键 词：Tavis—Cummings模型 部分转置矩阵负本征值 量子纠缠 

分 类 号：O431.2[机械工程—光学工程]