Loss of nonclassical properties of quantum states in linear phase-insensitive processes with arbitrary time-dependent parameters

Conditions of disappearance of different “nonclassical” properties (usual and high-order squeezing, sub-Poissonian statistics, negativity of s-parametrized quasidistributions) are derived for a quantum oscillator, whose evolution is governed by the standard master equation of quantum optics with arbitrary time-dependent coefficients.