title: Atomic quantum dots coupled to a reservoir of a superfluid Bose-Einstein condensate.
abstract: We study the dynamics of an atomic quantum dot, i.e., a single atom in a tight optical trap which is coupled to a superfluid reservoir via laser transitions. Quantum interference between the collisional interactions and the laser induced coupling results in a tunable dot-bath coupling, allowing an essentially complete decoupling from the environment. Quantum dots embedded in a 1D Luttinger liquid of cold bosonic atoms realize a spin-boson model with Ohmic coupling, which exhibits a dissipative phase transition and allows us to directly measure atomic Luttinger parameters.
authors.affiliation: Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Recati
authors.forename: P O
authors.initials: PO
authors.lastname: Fedichev
authors.forename: W
authors.initials: W
authors.lastname: Zwerger
authors.forename: J
authors.initials: J
authors.lastname: von Delft
authors.forename: P
authors.initials: P
authors.lastname: Zoller