GENERATION OF PHASE-SENSITIVE NONCLASSICAL EFFECTS VIA DECAY OF LIGHT INTO A PHASE-INSENSITIVE ENVIRONMENT

We show that phase-sensitive nonclassical effects can be transiently produced via decay of a field mode into a heat bath. In particular, we analyze the time evolution of the fourth-order squeezing of the field mode and we show that under certain conditions the light field which initially was not fourth-order squeezed may exhibit this nonclassical effect. We have found general conditions under which the reduction of higher-order moments of quadrature operators can be observed and eventually the fourth-order squeezing can be produced.