非等同两原子与光场相互作用系统的腔场谱

研究了两个二能级原子与单模腔场具有不同耦合常量系统的腔场谱，讨论了量子化光场分别处于不同的光子数态时腔场谱结构随相对耦合常量R变化的新特性。发现随着R由0到1的增加，腔场谱各对应峰峰位相对腔场原共振频率ω0对称偏移；真空场（n=0）的峰高在0〈R〈0．3内变化较快，其拉比峰个数按2→6→4规律变化；弱场（n=1）峰高在0〈R〈0．5内变化较快，其峰数量按2→6→12→9→7规律变化；强场（n=8）峰高在0〈R〈0．1内改变迅速，其峰数量按2→8→11→5规律变化，谱结构显得更加复杂；进一步的计算表明，当n〉〉8时。其峰的数量按3→5→3规律变化。同时发现，R=0和R=1时，峰的数量相对较少。各峰峰高之和由最小单调增至最大，这在物理上反映了原子的协作效应。

Cavity-Field Spectrum of Two Nonidentical Atoms Interacting with Single-Mode Quantized Radiation Field

The cavity field spectrum of a pair of two-level atoms interacting with single-mode field with different coupling constants is studied. The new properties of the spectrum structure are discussed when the fields are initially in various number states. It is found that the shifts of peak-positions are symmetrical with the increase of R from 0 to 1. With the increase of R, the number of the Rabi peaks changes according to 264 when the field is vacuum initially; and the peak number changes according to 261297 for weak initial fields; the peak number changes according to 28115 for strong fields. The peak-height changes rapid when the increase of R is from 0 to 0.3 for vacuum field, from 0 to 0.5 for weak field, and from 0 to 0.1 for strong field. When the photon-number of the initial field is vary large, the peak number changes according to 353 with the increase of R. The total height of the peaks increases monotonously with R changing from 0 to 1. The cooperative effect of atoms was shown.