Entanglement of three cavity fields via resonant interactions with dressed three-level atoms

In this paper we show that three cavity fields can be entangled when they are tuned on resonance with an ensemble of dressed three-level atoms. The master equation for the three cavity modes is derived by using atomic dressed states and the inseparability of the three output cavity modes is described by using a sufficient criterion proposed by van Loock and Furusawa. The physical cause is the atomic coherence effects, by which the quantum correlations are created in the field dynamics.

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