Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 26: Quantum effects: Miscellaneous

Q 26.4: Talk

Tuesday, March 18, 2014, 14:45–15:00, DO26 208

Complex network analysis of optimal, robust geometries for coherent excitation transport — •Federico Levi, Stefano Mostarda, Diego Prada-Gracia, Rao Francesco, and Mintert Florian — Freiburg Institute for Advanced Studies (FRIAS), Albert-Ludwigs University of Freiburg, Albertstr.19 79104 Freiburg, Germany

Quantum excitation transport is strongly influenced by interference with phase relations that depend on the scattering medium. As even small changes in the geometry of the medium can turn constructive interference to destructive, a clear relation between structure and fast, efficient transport is difficult to identify. We present a complex network analysis of quantum transport through disordered systems to elucidate the relationship between transport efficiency and structural organization. We find the emergence of structural classes which share geometrical and dynamical features. Interestingly, these features are found to be recurrent; that is, smaller systems are used as building blocks in larger systems.