  We study theoretically the quantum dynamics of two interacting electrons in
the symmetric double-dot structure under the influence of the bichromatic
resonant pulse. The state vector evolution is studied for two different pulse
designs. It is shown that the laser pulse can generate the effective exchange
coupling between the electron spins localized in different dots. Possible
applications of this effect to the quantum information processing (entanglement
generation, quantum state engineering) are discussed.
