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The dissipative and decoherence properties as well as the asymptotic behaviorof the single mode electromagnetic field interacting with the time-dependentsqueezed vacuum field reservoir are investigated in detail by using thealgebraic dynamical method. With the help of the left and right representationsof the relevant $hw(4)$ algebra, the dynamical symmetry of the nonautonomousmaster equation of the system is found to be $su(1,1)$. The unique equilibriumsteady solution is found to be the squeezed state and any initial state of thesystem is proved to approach the unique squeezed state asymptotically. Thus thesqueezed vacuum field reservoir is found to play the role of a squeezing moldof the cavity field.Comment: 5 pages, no figure, Revtex

Production of Squeezed State of Single Mode Cavity Field by the Coupling of Squeezed Vacuum Field Reservoir in Nonautonomous Case