Analysis and control of electron dynamics: An ab-initio perspective on the femto-second time scale
Event details
| Date | 28.09.2015 |
| Hour | 17:00 › 18:00 |
| Speaker |
Prof. Eberhard Gross Bio: Eberhard Gross, born in 1953 in Frankfurt am Main, studied mathematics and physics in Frankfurt and received his doctorate in 1980 in theoretical physics. After that he went as a postdoc to Santa Barbara, where he collaborated with the later Nobel laureate Walter Kohn. In 1986 he qualified as a professor in Frankfurt, and went in the same year as a Heisenberg Fellow back to the University of California. From 1990 he was Fiebiger professor at Würzburg University and from 2001 to 2009 professor at the Free University of Berlin. 2003-2004 he was a Visiting Fellow at Trinity College, Cambridge / UK, 2004, he received a Schlumberger Award. Since 2005 he has been a Max Planck Fellow at the Fritz Haber Institute of the Max Planck Society. 2005-2008 he was president of the Centre Européen de Calcul Atomique et Moléculaire (CECAM). |
| Location | |
| Category | Conferences - Seminars |
This lecture is about the motion of electrons, how it can be monitored, analyzed and, ultimately, controlled with external fields on the femto-second time scale. The investigations are performed with ab-initio simulations, using time-dependent density functional theory as theoretical tool. We shall visualize the laser-induced formation and breaking of chemical bonds in real time, and we shall adress questions like: How much time does an electron need to complete a transition from one state to another? Another main topic will be quantum transport. Time-dependent features of the electronic current through nano-scale junctions will be studied for electron pumps and molecular optical switches. A combination of quantum optimal control theory with time-dependent density functional theory will be presented as a method to compute laser pulses that are optimized to achieve a given goal. As an example, we shall calculate the laser pulse needed to switch the chirality of currents in quantum rings. Finally we will study the ultrafast laser induced demagnetisation of ferromagnetic solids.
Practical information
- General public
- Free
Organizer
- CECAM