Quantum properties of a single-mode dissipative amplifier against Schrödinger-cat states
Faisal A. A. El-Orany, Jan Peřina, Vlasta Peřinová, M. Sebawe Abdalla · Journal of Optics B Quantum and Semiclassical Optics · 2002
In this paper we investigate the single-mode properties (Wigner function, photon-number distribution and quadrature squeezing) of a dissipative parametric amplifier when the signal and idler modes are initially prepared in the Schrödinger-cat states. We show that there are two sources producing decoherence in the system, which are spontaneous pump photon decay and interaction with the environment. For the latter case, the system collapses to both statistical mixture states as well as thermal states governed by the interaction parameters.