title: Time-dependent configuration-interaction calculations of laser-pulse-driven many-electron dynamics: controlled dipole switching in lithium cyanide.
abstract: We report simulations of laser-driven many-electron dynamics by means of the time-dependent configuration interaction singles (doubles) approach. The method accounts for the correlation of ground and excited states, is capable of describing explicitly time-dependent, nonlinear phenomena, and is systematically improvable. Lithium cyanide serves as a molecular test system in which the charge distribution and hence the dipole moment are shown to be switchable, in a controlled fashion, by (a series of) laser pulses which induce selective, state-to-state electronic transitions. One focus of our time-dependent calculations is the question of how fast the transition from the ionic ground state to a specific excited state that is embedded in a multitude of other states can be made, without creating an electronic wave packet.
authors.affiliation: Theoretische Chemie, Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany.
authors.forename: Pascal
authors.initials: P
authors.lastname: Krause
authors.forename: Tillmann
authors.initials: T
authors.lastname: Klamroth
authors.forename: Peter
authors.initials: P
authors.lastname: Saalfrank