Hamburg 2009 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 15: Poster I

A 15.57: Poster

Dienstag, 3. März 2009, 16:30–19:00, VMP 9 Poster

Adiabatic energy transfer in Rydberg chains — •Cenap Ates, Alexander Eisfeld, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany

Ultracold Rydberg systems are ideally suited to study excitonic transport through ordered structures. The energy transfer is mediated by the strong transition dipole-dipole interactions between Rydberg atoms. As has been shown recently, the excitonic dynamics is also correlated with the motion of the atoms. The structure of the excitonic eigenfunctions determines how the particles move. We analyze the motion of Rydberg atoms prepared on an equidistant chain, where the regularity of the spacings is broken at one end. It is shown that the irregularity can move adiabatically through the chain. Coupled to this motion is a transfer of electronic excitation localized on the irregularly spaced particles. The energy transfer takes place on a single adiabatic potential surface. It should be stable against effects of dephasing.