Regensburg 2013 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 1: Quantum Dynamics, Decoherence and Quantum Information I

DY 1.8: Vortrag

Montag, 11. März 2013, 11:30–11:45, H39

Wave-packet revivals and decoherence in vibronically coupled systems — •Heiko Appel — Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany

Electronic decoherence is central for our understanding of physical processes that are prevailing in a large variety of phenomena such as photosynthesis, vision or solar-cell applications. In this work, we investigate the coupled vibronic dynamics in short trans-polyacetylene oligomers which are described in terms of a Su-Schrieffer-Heeger (SSH) Hamiltonian. Using explicit matrix representations of Fock space operators, we illustrate how to construct a numerically exact solution for the coupled system of electrons, phonons and photons. From the exact solution of the model, we extract time scales for electronic decoherence and relate this to the decay of wave-packet revivals.