Semiconductor Kadano -Baym Equations Results for Optically Excited Electron-Hole Plasmas in Quantum Wells

We present results from solutions of the Semiconductor Kadanoo-Baym Equations (full two-time semiconductor Bloch equations) with selfenergies in quasistatic Born approximation, for GaAs single quantum wells. We concentrate on memory and correlation eeects under fs-pulse excitation conditions. A remarkable feature is the observed kinetic energy increase which is due to the buildup of correlations among the generated carriers. We demonstrate that the two-time approach is i) very well suited to study correlation phenomena both on short and long times, thereby avoiding well-known problems of one-time kinetic equations, and ii) that it is becoming practical with the use of eecient integration techniques.