Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 32: Quantum Information: Atoms and Ions II
Q 32.8: Vortrag
Mittwoch, 10. März 2010, 15:45–16:00, E 214
Effects of Ion-Trap RF-Potential on Atom-Ion Scattering Processes — •Björn Arnold1, Tommaso Calarco1, and Zbigniew Idziaszek2 — 1Institute for Quantum Information Processing, University of Ulm, D-89069 Ulm, Germany — 2Institute for Theoretical Physics, University of Warsaw, 00-681 Warsaw, Poland
We investigate collisions of a single ion trapped in RF potential with a single atom trapped in a static trap. Within the one- and three-dimensional models we examine the effects of the time-dependent ion trap on the collision dynamics and on the average particle energies. We first perform our calculations employing an idealized model of atom-ion interaction provided through a delta potential, later we turn to a more realistic description involving long-range 1/r4 atom-ion interaction supplemented by the quantum-defect boundary conditions at short range. We introduce different description methods for the wave-function and its time evolution by applying simple expansions in different ortho-normal bases and Floquet expansion.