Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.46: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Decoherence of the Orientation state — •Timo Fischer and Klaus Hornberger — Universität Duisburg-Essen

We introduce a Lindblad master equation describing the decoherence of the orientation state of extended quantum objects, such as molecules. Using the Monte Carlo unravelling the master equation is analyzed numerically. We further determine the pointer states of the master equation, i.e. the pure states which are minimally affected by the environment. They result from the competition of two opposing effects, the dispersion caused by the coherent part of the dynamics and the localization induced by the interaction with the environment [1]. To this end, we solve an associated nonlinear equation for pointer states.

[1] Pointer basis induced by collisional decoherence, M. Busse and K. Hornberger, J. Phys. A 43 (2010)