Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation*

Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

Wang Yan-Yi, Fang Mao-Fa
       

(color online) The dynamics of ES factors E(Sα) of a two-level atom in the JC model without NH operation. The atom is initially in a superposition state with θ = π/2, the cavity field in a coherent state with average photon number , and the coupling strength g = 1. (a) E(Sx) and (b) E(Sy)