title: Non-Markovian entanglement dynamics in the presence of system-bath coherence.
abstract: A complete treatment of the entanglement of two-level systems, which evolves through the contact with a thermal bath, must include the fact that the system and the bath are not fully separable. Therefore, quantum coherent superpositions of system and bath states, which are almost never fully included in theoretical models, are invariably present when an entangled state is prepared experimentally. We show their importance for the time evolution of the entanglement of two qubits coupled to independent baths. In addition, our treatment is able to handle slow and low-temperature thermal baths.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
authors.forename: Arend G
authors.initials: AG
authors.lastname: Dijkstra
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Tanimura