Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 32: Poster: Quantum gases, ultracold atoms and molecules

Q 32.9: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Quantum dynamics in ultracold environments — •Paula Ostmann and Walter Strunz — TU Dresden, Institut für Theoretische Physik, Dresden, Deutschland

We investigate quantum dynamics of particles (molecules, ions) in ultracold quantum environments. Examples we have in mind are molecules immersed in a helium nanodroplet, or ions immersed in an ultracold atomic gas. The ultracold environment acts as a refrigerator, and thus, the influence on the motion of the molecule or ion is dissipative. For a theoretical description, simple phenomenological master equation approaches are widely used to describe the ensuing damped quantum dynamics.

In our contribution the focus lies on a more detailed description of the environment and the particle-environment interaction. We aim to describe the effective dynamics of the damped particle dynamics using the full bath correlation function instead of a simple damping rate. In this way we gain a more thorough theoretical understanding of properties of quantum matter, such as superfluidity, when acting as an environment.