title: Entanglement dynamics of a strongly driven trapped atom.
abstract: We study the entanglement between the internal electronic and the external vibrational degrees of freedom of a trapped atom which is driven by two lasers into electromagnetically induced transparency. It is shown that basic features of the intricate entanglement dynamics can be traced to Landau-Zener splittings (avoided crossings) in the spectrum of the atom-laser field Hamiltonian. We further construct an effective Hamiltonian that describes the behavior of entanglement under dissipation induced by spontaneous emission processes. The proposed approach is applicable to a broad range of scenarios for the control of entanglement between electronic and translational degrees of freedom of trapped atoms through suitable laser fields.
authors.affiliation: Physikalisches Institut, Universität Freiburg, Freiburg, Germany.
authors.forename: Maryam
authors.initials: M
authors.lastname: Roghani
authors.forename: Hanspeter
authors.initials: H
authors.lastname: Helm
authors.forename: Heinz-Peter
authors.initials: HP
authors.lastname: Breuer