Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 31: Quantum dynamics, decoherence and quantum information

DY 31.2: Vortrag

Freitag, 29. Februar 2008, 10:30–10:45, MA 004

Survival Probabilities of Coherent Energy Transfer — •Oliver Mülken — Institute of Physics, University of Freiburg, Freiburg, Germany

We consider exciton trapping in the continuous-time quantum walk framework. The survival probability displays different decay domains, related to distinct regions of the spectrum of the Hamiltonian. For linear systems and at intermediate times the decay obeys a power-law, in contrast to the corresponding exponential decay found in incoherent continuous-time random walk situations.

Reference: [1] Phys. Rev. Lett. 99, 090601 (2007).