Multiple-Photon-Added and -Subtracted Two-Mode Binomial States:Nonclassicality and Entanglement *

Kai-Cai Li,Xiang-Guo Meng,Ji-Suo Wang

Fig. 4 (Color online) Entanglement entropy as a function of the parameter $\varsigma$ for the states $\left \vert \xi \right \rangle _{s,a}$ and $\left \vert \xi \right \rangle _{a,s}$ with a given value of $q=5$ and different values of $(m,n)$, where the values of ($m,n$) are the same of those of Fig. 3.