Hannover 2010 – wissenschaftliches Programm

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SYQS: Symposium Quantum Control Spectroscopy

SYQS 2: Quantum Control Spectroscopy II

SYQS 2.1: Hauptvortrag

Donnerstag, 11. März 2010, 14:00–14:30, E 415

Efficient control of electron dynamics — •Matthias Wollenhaupt — University of Kassel, Institute of Physics, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany

The ability to generate ultrashort laser pulses with controllable shape has made it possible to manipulate the dynamics of quantum systems almost at will. Quantum control has wide-ranging applications but also important implications to our basic understanding of light matter interactions. For instance, revealing physical mechanisms underlying the coherent interaction of intense tailored light fields with matter has become a central theme in quantum control. Efficient control not only implies large population transfer rates, i.e. inherently non-perturbative interactions, but also comprehensive control of the three dimensional electron wave function. In this contribution, both aspects of control are demonstrated on bound and continuum electron dynamics.

As for bound electron dynamics we demonstrate efficient non-perturbative control strategies based on tailoring the interaction of intense laser fields to the dynamics of atomic or molecular dipole with attosecond precision [1].

Coherent control of electron dynamics in the continuum exerted by polarization-shaped laser pulses is combined with direct three-dimensional detection via tomographic reconstruction [2,3].

[1] T. Bayer et al., Phys.Rev.Lett. 102, (2009) 023004-1.

[2] M. Wollenhaupt et al., Appl.Phys.B 95, (2009) 245.

[3] M. Wollenhaupt et al., Appl.Phys.B 95, (2009) 647.