光子晶体中外驱动场作用下单原子动力学性质研究

Danamics Properties of a Single Atom Embedded in Photonic Crystal

讨论了各向异性光子晶体中外驱动场作用下单原子的动力学性质.通过理论分析和数值计算发现:原子上能级的布居数将出现周期性振荡的性质,其振荡的频率和振荡的幅度与驱动场的作用强度,驱动场与共振频率失谐度δ以及原子上能级与光子晶体带边间相对位置将直接影响到原子的动力学特性.

The dynamical properties and spectrum characteristics of a -type atom with an external field embedded in three- dimensional photonic crystals are investigated. With the help of numerical calculation and theoretical analysis, we find that the populations of the upper and lower levels will display periodic oscillation, and the frequency and amplitude of the oscillation will be greatly affected by the intensity of the external-driving field, the detuning. The spontaneous emission of the atom will be apparently influenced by the relative pdsition of the upper level from the forbidden gap.