title: Stabilization of nonclassical states of the radiation field in a cavity by reservoir engineering.
abstract: We propose an engineered reservoir inducing the relaxation of a cavity field towards nonclassical states. It is made up of two-level atoms crossing the cavity one at a time. Each atom-cavity interaction is first dispersive, then resonant, then dispersive again. The reservoir pointer states are those produced by an effective Kerr Hamiltonian acting on a coherent field. We thereby stabilize squeezed states and quantum superpositions of multiple coherent components in a cavity having a finite damping time. This robust decoherence protection method could be implemented in state-of-the-art experiments.
authors.affiliation: Systems & Modeling, Université de Liège, Belgium. alain.sarlette@ulg.ac.be
authors.forename: A
authors.initials: A
authors.lastname: Sarlette
authors.forename: J M
authors.initials: JM
authors.lastname: Raimond
authors.forename: M
authors.initials: M
authors.lastname: Brune
authors.forename: P
authors.initials: P
authors.lastname: Rouchon