Issue
EPL
Volume 80, Number 5, December 2007
Article Number 53001
Number of page(s) 5
Section Atomic, Molecular and Optical Physics
DOI http://dx.doi.org/10.1209/0295-5075/80/53001
Published online 25 October 2007
EPL, 80 (2007) 53001
DOI: 10.1209/0295-5075/80/53001

Properties of wave packets deduced from quantum control fitness landscapes

P. Marquetand1, P. Nuernberger2, G. Vogt2, T. Brixner1, 2 and V. Engel1

1  Universität Würzburg, Institut für Physikalische Chemie and Röntgen Research Center for Complex Material Systems - Am Hubland, 97074 Würzburg, Germany
2  Universität Würzburg, Physikalisches Institut and Röntgen Research Center for Complex Material Systems Am Hubland, 97074 Würzburg, Germany

voen@phys-chemie.uni-wuerzburg.de

received 25 July 2007; accepted in final form 29 September 2007; published December 2007
published online 25 October 2007

Abstract
We demonstrate the versatility of shaped femtosecond dump pulses for the investigation of molecular quantum systems. Model calculations show that population is most efficiently transferred by shaped pulses. Illustrative fitness landscapes, where the excited-state population is analyzed as a function of selected laser pulse parameters, facilitate a characterization of wave packet evolution and the potential energy surfaces. A first experimental implementation is presented for retinal photoisomerization in bacteriorhodopsin.

PACS
32.80.Qk - Coherent control of atomic interactions with photons.
82.53.-k - Femtochemistry.
82.20.Kh - Potential energy surfaces for chemical reactions.

© Europhysics Letters Association 2007