N. Arvind,"mukunda et R. Simon, GAUSSIAN-WIGNER DISTRIBUTIONS AND HIERARCHIES OF NONCLASSICAL STATES IN QUANTUM OPTICS - THE SINGLE-MODE CASE, Physical review. A, 56(6), 1997, pp. 5042-5052
A recently introduced hierarchy of states of a single-mode quantized r
adiation held is examined for the case of centered Gaussian-Wigner dis
tributions. It Is found that the onset of squeezing among such states
signals the transition to the strongly nonclassical regime. Interestin
g consequences for the photon-number distribution, and explicit repres
entations for them, are presented. The effects of nonideal detection a
re also carefully analyzed. [S1050-2947(97)00512-X].