Hannover 2013 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 6: SYED: Electronic 2D Spectroscopy from Small to Large Systems II

MO 6.4: Hauptvortrag

Montag, 18. März 2013, 15:30–16:00, E 415

Correlated Two-electron Wave-Packets in Helium — •Javier Madronero — Universität Duisburg-Essen

A natural and probably the most simple candidate to investigate the possibility of manipulating the correlated electronic dynamics with the help of external fields is the helium atom. In this theoretical contribution we address two different scenarios: on the one hand, under near-resonant driving certain highly doubly excited helium states might transform in two-electron nondispersive wave packets, i.e. robust quantum objects that evolve along classical trajectories without dispersion. On the other hand, we explore to what extend the time delay in attosencond transient absorption experiments of helium dressed by a few-cycle visible pulse [1] can be used to control the shape of two-electron correlated wave functions.

[1] C. Ott et al., arXiv:1205.0519 (2012).