Inhomogeneous spatio-temporal  excitation of elementary excitations can be used to study the dynamics of transport phenomena within hybrid nanostructures  and between their constituents.
In particular, we focus on the theoretical description of

1. the femtosecond excitation transfer on a nanometer scale in metal and semiconductor-hybrid structures, as well as
2. the internal dynamics of compound elementary excitations.

We aim at:

1. a self-consistent description of optically induced excitation transfer in hybrid nanostructures,
2. the manipulation of internal motion of elementary excitations by spatially localized fields, and
3. proposals for new spatially resolved spectroscopic methods to observe information on the internal dynamics in hybrid structures.

Therefore,

1. we address excitation transfer between the constituents of hybrids, examples are:
   coupled circular silver islands and semiconductor wires including carbon nanotubes, silver/gold nanoantennas coupled to quantum dots, including single quantum dots placed in an inverse bowtie structure, coupled quantum dots near a silver/gold nanostructure.
2. we  address the question to what extent internal degrees of freedom (relative motion of a compound elementary excitation) in spatially extended structures can be manipulated by nanoscale spatial gradients of the applied optical fields.
   Typical examples are:
   electron-hole distributions in bound exciton states,
   electron/exciton-phonon clouds in polarons.
3. On top of these microscopic material studies, coherent spatially resolved nonlinear spectroscopic signals will be applied to these systems.

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