When non-Gaussian states are Gaussian: Generalization of nonseparability criterion for continuous variables
Derek McHugh, Vladimír Bužek, Mário Ziman · Physical Review A · 2006
We present a class of non-Gaussian two-mode continuous-variable states for which the separability criterion for Gaussian states can be employed to detect whether they are separable or not. These states reduce to the two-mode Gaussian states as a special case.