title: Experimental Observation of Resonance-Assisted Tunneling.
abstract: We present the first experimental observation of resonance-assisted tunneling, a wave phenomenon, where regular-to-chaotic tunneling is strongly enhanced by the presence of a classical nonlinear resonance chain. For this we use a microwave cavity made of oxygen free copper with the shape of a desymmetrized cosine billiard designed with a large nonlinear resonance chain in the regular region. It is opened in a region, where only chaotic dynamics takes place, such that the tunneling rate of a regular mode to the chaotic region increases the line width of the mode. Resonance-assisted tunneling is demonstrated by (i) a parametric variation and (ii) the characteristic plateau and peak structure towards the semiclassical limit.
authors.affiliation: Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany.|Department of Energy Management and Power System Operation, University of Kassel, D-34121 Kassel, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Gehler
authors.affiliation: Technische Universität Dresden, Institut für Theoretische Physik and Center for Dynamics, 01062 Dresden, Germany.|OncoRay, National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Fetscherstraß e 74, PF 41, 01307 Dresden, Germany.
authors.forename: Steffen
authors.initials: S
authors.lastname: Löck
authors.affiliation: Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany.
authors.forename: Susumu
authors.initials: S
authors.lastname: Shinohara
authors.affiliation: Technische Universität Dresden, Institut für Theoretische Physik and Center for Dynamics, 01062 Dresden, Germany.|Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany.
authors.forename: Arnd
authors.initials: A
authors.lastname: Bäcker
authors.affiliation: Technische Universität Dresden, Institut für Theoretische Physik and Center for Dynamics, 01062 Dresden, Germany.|Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany.
authors.forename: Roland
authors.initials: R
authors.lastname: Ketzmerick
authors.affiliation: Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany.|Université Nice Sophia Antipolis, CNRS, Laboratoire de Physique de la Matière Condensée, UMR 7336 Parc Valrose, 06100 Nice, France.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kuhl
authors.affiliation: Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany.
authors.forename: Hans-Jürgen
authors.initials: HJ
authors.lastname: Stöckmann
mesh_terms: D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D011789:Quantum Theory