Propagation of Coulomb-correlated electron-hole pairs in semiconductors with correlated and anticorrelated disorder

Local ultrafast optical excitation of electron-hole pairs in disordered sem iconductors provides the possibility to observe experimentally interaction- assisted propagation of correlated quantum particles in a disordered enviro nment. In addition to the interaction driven delocalization known for the c onventional single-band TIP-(two-interacting-particles)-problem the semicon ductor model has a richer variety of physical parameters that give rise to new features in the temporal dynamics. These include different masses, corr elated versus anticorrelated disorder for the two particles, and dependence on spectral position of excitation pulse.