摘要
在光原子相互作用系统中,考虑两二能级原子间的偶极–偶极相互作用对原子间纠缠动力学过程的影响。研究表明:原子间的偶极–偶极相互作用对量子纠缠(共生纠缠度)动力学振荡过程具有抑制作用,当偶极–偶极相互为零时,量子纠缠呈双周期振荡效果,当偶极–偶极相互作用增强时,振荡频率逐渐降低,当偶极–偶极相互作用远大于原子与库环境相互作用强度时,量子纠缠呈明显的余弦振荡,其振荡频率为2πΩ/ ( √6g) . 。
The influence of dipole-dipole interactions between the two two-level entangled atoms for dynamics of quantum entanglement is studied in the system of matter-field interaction in quantum optics. The results show that the dipole-dipole interaction is capable to suppress dynamics of quantum entanglement (concurrence). If we have no regard for the dipole-dipole interaction, the dynamic of quantum entanglement is periodic oscillation including two different frequencies. Meanwhile, the frequency is decreasing with the increasing of the dipole-dipole interaction. When this interaction is much larger than that between the atoms and independent the single-mode field (modeled as extern environment), the process of dynamic of quantum entanglement is cosine oscillation with frequency 2πΩ/ ( √6g) ..
作者
孙晓梅
刘巧
刘有志
张延亮
Xiaomei Sun;Qiao Liu;Youzhi Liu;Yanliang Zhang(College of Software, Jishou University, Zhangjiajie Hunan)
出处
《现代物理》
2017年第6期235-241,共7页
Modern Physics
基金
吉首大学大学生研究性学习和创新性实验计划支持项目。
