  The influence of an electron-vibrational coupling on the laser control of
electron transport through a molecular wire that is attached to several
electronic leads is investigated. These molecular vibrational modes induce an
effective electron-electron interaction. In the regime where the wire electrons
couple weakly to both the external leads and the vibrational modes, we derive
within a Hartree-Fock approximation a nonlinear set of quantum kinetic
equations. The quantum kinetic theory is then used to evaluate the laser
driven, time-averaged electron current through the wire-leads contacts. This
novel formalism is applied to two archetypical situations in the presence of
electron-vibrational effects, namely, (i) the generation of a ratchet or pump
current in a symmetrical molecule by a harmonic mixing field and (ii) the laser
switching of the current through the molecule.
