Entanglement dynamics of three interacting two-level atoms within a common structured environment
Nguyen Ba An, Jaewan Kim, Kisik Kim · Physical Review A · 2011
We derive exact time evolution of three two-level atoms coupled to a common environment. The environment is structured and is modeled by a leaky cavity with Lorentzian spectral density. The atoms are initially prepared in a generalized $W$ state and later on experience pairwise dipole-dipole interactions and couplings to the cavity. We study tripartite disentangling and entangling dynamics as well as protecting bipartite entanglement with both atom-atom interactions and atom-cavity couplings taken simultaneously into account.