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In the present work we study the entanglement dynamics between two atoms when one of them, considered as having either two or three levels, is left to interact with a single mode of a high-Q cavity through two-photon processes. Making use of the negativity, we show the necessary conditions for these systems to exhibit the sudden death phenomena.doi:10.1088/0953-4075/42/19/195507 fatcat:hbu4peor2vbztjslwqkvp3kk7m