Quantum Kinetics in Transport and Optics of Semiconductors Nanoscale miniaturization and femtosecond laser pulse spectroscopy require a quantum mechanical description of the carrier kinetics that goes beyond the conventional Boltzmann theory. On these extremely short length and time scales the electrons behave as do partially coherent waves. This monograph deals with quantum kinetics for transport in low dimensional microstructures and for ultra short laser pulse spectroscopy. The nonequilibrium Green function theory is described and used for the derivation of the quantum kinetic equations. Numerical methods for the solution of the retarded quantum k