Hannover 2010 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 15: Ultracold Atoms: Manipulation and Detection (with A)
Q 15.1: Talk
Tuesday, March 9, 2010, 14:00–14:15, A 320
Interactions of atoms with spatially dispersive solids — •Harald Haakh1, Carsten Henkel1, and Baruch Horovitz2 — 1Universität Potsdam, Germany — 2Ben Gurion University of the Negev, Beer Sheva, Israel
We discuss the coupling of atoms and ions to solid surfaces, in particular superconductors and metals. This is relevant for the anomalous heating in miniaturized ion traps and for spin flip rates of magnetic traps implemented on microchips, which determine the trap stability. Our approach is based on the surface response of spatially dispersive media, relevant for vortex lattices in type-II superconductors and the anomalous skin effect. We identify in particular the relevance of the scattering mean free path of the carriers in the solid, as compared to the distance of observation by the atom. Different boundary conditions for the current density (specular vs. diffuse) are generalized to the relevant parameter regime (non-retarded transverse response).