Vacuum induced transparency and slow light phenomena in a two-level atomic ensemble controlled by a cavity
Guo Yu-Jie†a),b), Nie Wen-Jiec)
       
The (a) real and (b) imaginary parts of the susceptibility as a function of δ for different cavity decay rates when Δ = 0 and the confined strong coupling condition Ng 2 = 10 κγ is satisfied.