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We study the orbital and spin dynamics of charge carriers induced bynon-overlapping linearly polarized light pulses in semiconductor quantum wells(QWs). It is shown that such an optical excitation with coherent pulses leadsto a spin orientation of photocarriers and an electric current. The effects arecaused by the interference of optical transitions driven by individual pulses.The distribution of carriers in the spin and momentum spaces depends on the QWcrystallographic orientation and can be efficiently controlled by the pulsepolarizations, time delay and phase shift between the pulses, as well as anexternal magnetic field.

Excitation of spin density and current by coherent light pulses in QWs