Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 64: Matterwave Optics II
Q 64.8: Vortrag
Freitag, 12. März 2010, 15:45–16:00, A 320
The weak-coupling master equation of polarizable particles in a pumped cavity — •Stefan Nimmrichter1, Klemens Hammerer2, Helmut Ritsch2, and Markus Arndt1 — 1Faculty of Physics, University of Vienna — 2Institute for Theoretical Physics, University of Innsbruck
We derive a master equation for the motion of a polarizable particle weakly interacting with strongly pumped cavity modes. We follow the analogy to the light-pressure coupling model for the motion of cavity mirrors, while the particle motion is not considered to be deeply trapped in the optical potential. Focussing on massive particles with uncontrollable internal dynamics such as large molecules and clusters, our derivation bases on a phenomenological model of off-resonant particle-light interaction. The resulting friction and diffusion coefficients are in good agreement with former semiclassical calculations for atoms and small molecules in weakly pumped cavities, while the current rigorous quantum treatment is meant to throw light on the feasibility to optically manipulate beams of hot and massive particles.