Photon bunching and anti-bunching with two dipole-coupled atoms in an optical cavity
Zheng Ya-Mei, Hu Chang-Sheng, Yang Zhen-Biao, Wu Huai-Zhi†,
       

The dressed energy level for n = 1,2 as a function of the dipolar coupling strength J for (a) Δac = −1 and (b) Δac = −5. The dressed energy for n = 2 has been divided by a factor of 2. Parameters in units of g.