Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster II
Q 55.69: Poster
Donnerstag, 11. März 2010, 16:00–19:00, Lichthof
Motional effects on the efficiency of excitation transfer — •Ali Asadian1, Markus Tiersch1, Jianming Cai1, Gian Giacomo Guerreschi1, Hans Briegel1, and Sandu Popescu2 — 1Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, und Institut für Quantenoptik und Quanteninformation der Österreichischen Akademie der Wissenschaften, Innsbruck, Austria — 2Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK.
Energy transfer plays a vital role in many natural and technological processes. In this work we study the effects of classical motion on the electronic excitation transfer through a chain of interacting molecules. Our investigation demonstrates that for various types of oscillations, in a suitable range of frequencies, the efficiency of the energy transfer is significantly enhanced. This enhancement is a signature of the collaborative interplay between the coherent evolution of the excitation and the classical motion of the molecules. This effect has no analogue in the classical incoherent energy transfer. In addition, we discuss control techniques to optimize the excitation transfer along the chain.