Quantum beat of strain-induced GaAs quantum dots

摘要

We report the experimental observation of transient oscillationbehaviour of the strain-induced GaAs quantum dots in the time-resolvedphotoluminescence in the magnetic field parallel to the growth direction.We regard the origin of the oscillation as quantum beats caused byquantum interference of excitons showing Zeeman splitting. Wecalculated the absolute g-factor of the quantum dots, and it was 0.47.