Institut für Theoretische Physik I
Universität Erlangen-Nürnberg
Staudtstraße 7
91058 Erlangen

How to find us

Phone: +49-9131-85 28442
Fax: +49-9131-85 28444

Department Physik

Teilbibliothek Physik Web-Opac
UnivIS FAU Erlangen-Nürnberg

Physikalisches Kolloquium
QuCoLiMa Talks
Kolloquium der Theor. Physik
Gruppenseminar der Theorie 1

former partners

Kolloquium der Theoretischen Physik

Sommersemester 2013

jeden zweiten Dienstag jeweils von 16-18h im Hörsaal F
um zahlreiches Erscheinen wird gebeten

  • 23.04.2013
    Matthias Schmidt (Uni Bayreuth)
    Recent developments in dynamical density functional theory
    [show abstract]

    The dynamics of complex soft matter systems is a topic of considerable current interest, both from an experimental and theoretical perspective. Among the various theories aiming to provide a microscopic description of complex transport and pattern formation phenomena the dynamical density functional theory (DDFT) has emerged as a prime candidate. We discuss its current status and possible extensions.

  • 07.05.2013
    Michael Hartmann (TU München)
    Nanomechanical Qubits
    [show abstract]

    We introduce an approach to quantum information processing where the information is stored in the motional degrees of freedom of nanomechanical resonators. In our optomechanical approach, nanomechanical oscillators couple to laser driven resonances of an optical cavity. By lowering the resonance frequency of the oscillators via inhomogeneous electrostatic fields, we significantly enhance their intrinsic geometric nonlinearity per phonon. This causes the motional sidebands to split into separate spectral lines for each eigenstate of the mechanical motion and transitions between such eigenstates can be selectively addressed. This can be used to generate stationary phonon Fock states. Moreover the two lowest mechanical energy levels can be employed as qubits where single qubit rotations are conducted by radio frequency voltage pulses that are applied to individual resonators. Two qubit entangling gates in turn are implemented via a coupling of two qubits to a common optical resonance of the cavity.

  • 21.05.2013
    [show abstract]


  • 04.06.2013
    Gabriel Bester (MPI für Festkörperforschung, Stuttgart)
    Next Frontiers in the ab-initio modeling of nanostructures: at the crossroads of solid state physics and quantum optics.
    [show abstract]


  • 18.06.2013
    Renate Loll (Nijmegen)
    Causal Dynamical Triangulations: Creating Quantum Spacetime Dynamically
    [show abstract]

    The search for "quantum spacetime" - the putative quantum description of spacetime at Planckian scales - can be approached in many ways, from semiheuristic mathematical modelling to fully-fledged nonperturbative systems of "quantum gravity". My colloquium talk will introduce Causal Dynamical Triangulations (CDT), a nonperturbative path integral method for constructing a fundamental theory of quantum gravity, including its motivation, ingredients and computational implementation. I will then give an overview of old and new results obtained in CDT quantum gravity, including the statistical model's phase structure, the emergence of semiclassical geometry and counterintuitive properties found on short length scales, and what they may tell us about the nature of quantum spacetime and nonperturbative formulations of quantum gravity in general.

  • 16.07.2013
    Patrick Rinke (Fritz-Haber-Institut Berlin)
    Towards a unified description of ground and excited states with view to hybrid organic/inorganic systems
    [show abstract]