| 二能级系统中粒子布居几率振荡的布洛赫矢量分析 |
| |
| 引用本文： | 伏振兴,张国前.二能级系统中粒子布居几率振荡的布洛赫矢量分析[J].北京联合大学学报(自然科学版),2008,22(3). |
| |
| 作者姓名： | 伏振兴 张国前 |
| |
| 作者单位： | 宁夏师范学院,物理与信息技术学院,宁夏,固原,756000;宁夏师范学院,物理与信息技术学院,宁夏,固原,756000 |
| |
| 摘 要： | 考虑系统粒子的弛豫,利用密度矩阵运动方程,研究了线性啁啾脉冲作用下二能级系统的粒子布居几率随时间的演化情况,并在布洛赫矢量模型表象下,通过布洛赫矢量的动态演化过程分析了粒子相干布居转移过程中布居振荡的物理机理.结果表明,粒子数振荡反映的是二能级原子系统中粒子布居转移、色散和吸收三者之间的动态转化过程.
|
| 关 键 词： | 二能级系统 布居几率 布洛赫矢量模型 |
Analysis of Oscillation of Population Probability in the Two-level System by Bloch Vector |
| |
| FU Zhen-xing,ZHANG Guo-qian.Analysis of Oscillation of Population Probability in the Two-level System by Bloch Vector[J].Journal of Beijing Union University,2008,22(3). |
| |
| Authors: | FU Zhen-xing ZHANG Guo-qian |
| |
| Institution: | FU Zhen-xing,ZHANG Guo-qian(College of Physics , Information Technology,Ningxia Normal University,Guyuan Ningxia\ 71006,China) |
| |
| Abstract: | The time evolution of population probability in two-level system under a linear frequency-chirped field is studied by mean of the density matrix equation of motion when the decay of the excited state is considered,and the physical mechanism of the oscillation in the process of the population transfer is analyzed using the dynamic evolution process of the Bloch vector under the picture of Bloch vector model.The result shows that the phenomenon of oscillation in the two-level system reveals the dynamic conver... |
| |
| Keywords: | two-level system population transfer Bloch vector model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
