基于拉曼耦合Jaynes-Cumming-Paul模型的原子布居数反转动力学演化

Dynamical evolution of population inversion of Raman coupled Jaynes-Cumming-Paul model

本文主要研究了拉曼耦合Jaynes-Cumming-Paul模型中原子布居数反转的动力学演化.讨论在不同初始状态时,在相互作用过程中原子布居数反转的演化情况.结果表明,无论原子处于相干还是非相干叠加态,只要当输入光场为Fock态时,反转现象明显;当输入光场为相干态时,反转现象存在但不明显;当输入光场为压缩真空态和热态时,几乎无反转现象.

In this paper, we study the dynamical evolution of population in the Raman coupled Jaynes - Cumming- Paul model. The population inversion is discussed for different initial states of atom and optical field. These results show that whether coherent or incoherent superposition for atom has the same effect for population inversion but different optical fields have obvious effect for population inversion. The inversion may happen for Fock state and coherent state, but no inversion is happened for squeezed vacuum state and thermal state.