Dynamics of indirect excitons in a coupled quantum-well pair

We numerically integrated in space and time the effective-mass Schrodinger equation for a two dimensional electron-hole system in two coupled quantum wells. Considering a time-dependent Hartree potential, we derive the nonlinear dynamical evolution of the carrier wave functions. Charge dynamically trapped in both wells is found to produce a reaction field that modifies the system dynamics. We show the possibility of having an electrostatic trap for indirect excitons in the absence of an external electric field. (C) 2013 AIP Publishing LLC.