Time Evolution of an Anharmonic Oscillator Interacting with a Squeezed   Bath
  The evolution of a single mode of the electromagnetic field interacting with a squeezed bath in a Kerr medium is considered. The solution of the corresponding master equation is given numerically. It is argued that the creation of a superposition state (Schr\"odinger's cat) is better achieved in presence of a squeezed reservoir than of a thermal one. 
G.M. D'Ariano, M.Fortunato and P. Tombesi