Abstract

We discuss a model of two nonlinear Kerr-like oscillators, mutually coupled and excited by parametric process. We show that the system’s evolution, starting from Werner-like states, remains closed within a small set of two-mode n-photon states and that a pure two-qubit entangled state can be generated. For some initial Werner-like states, delayed entanglement generation can be observed. We investigate the influence of two damping mechanisms on the system’s evolution. We show that, for both cases, entanglement can survive despite the presence of damping, and that the effects of sudden entanglement death and its rebirth can appear in the system.

© 2014 Optical Society of America

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