Entanglement sudden death via two-photon processes in cavity QED
Wesley Bueno Cardoso, Ardiley Torres Avelar, B. Baseia, N. G. de Almeida · Journal of Physics B Atomic Molecular and Optical Physics · 2009
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.