Directed excitation transfer in vibrating chains by external fields
Oliver MülkenPhysikalisches Institut, Universität Freiburg, Freiburg, GermanyMaximilian BauerPhysikalisches Institut, Universität Freiburg, Hermann-Herder Straße 3, DE-79104 Freiburg, Germany
2011en
ABI
Abstract
We study the coherent dynamics of excitations on vibrating chains. By applying an external field and matching the field strength with the oscillation frequency of the chain it is possible to obtain an (average) transport of an initial Gaussian wave packet. We distinguish between a uniform oscillation of all nodes of the chain and the chain being in its lowest eigenmode. Both cases can lead to directed transport.
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Cited by 20 references