Polarization revival of a Bloch-oscillating wave packet at resonant Zener tunneling in GaAs shallow superlattice

摘要

We investigate the dynamics of a Bloch-oscillating wave packet in the presence of strong coupling to delocalized above barrier states, using time-resolved intraband polarization-sensitive measurements. At a threshold electric field, the resonance of localized and delocalized states causes a quantum beating which is observed as a revival in the interband polarization. Our numerical simulation visualizes the spatial wave packet decomposition and reformation.