激光诱导原子布居数转移的探讨

On Laser-induced Population Transfer

在介绍非相干布居数转移和相干布居数转移技术及相关理论分析的基础上,研究了绝热快速通道(ARP)技术控制基态原子的相干性及其布居数在不同能态间的转移,并运用密度矩阵方程与麦克斯韦方程联合的自洽方程数值解,获得了实现原子布居数在不同能态间完全转移的条件,只要选择好两脉冲的输入次序和延迟时间,就可以很好地控制粒子数,以达到我们所需的各种结果.

This paper reviews some basic techniques and theories for laser- induced incoherent population transfer schemes and resonant coherent excitation. By numerical simulations based on self - consistent set of density matrix equations and Maxwell equations, the authors have found this control can be achievable with great robustness and efficiency in nanosecond time scale using two pulses with proper selection of sequence timing to prepare the state for coherence superposition and population transfer with effective suppression of spontaneous emission.