Abstract
The state evolution of a system of two-mode optical fields interacting with a Kerr medium is investigated. It is discovered that at some special times the system evolves into a quantum superposition of a finite number of different macroscopically distinguishable two-mode coherent states, i.e., so-called two-mode Schrödinger-cat states. Especially the two-mode Yurke-Stoler state is achieved at half of the period of the system by taking proper parameters. The influence of detuning and dissipation on two-mode Schrödinger-cat states is also discussed.
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