Exciton Rabi Oscillation in Single Pair of InAs/GaAs Coupled Quantum Dots

Abstract

We measured the optical properties of exciton states and the exciton Rabi oscillation in a single pair of coupled quantum dots (CQDs). We compared the transition dipole moments of exciton in a single quantum dot (SQD) and CQDs. The transition dipole moment estimated from the experimental result in a single pair of CQDs was 72 D, which is larger than that for SQD. We concluded that the large transition dipole moment is attributed to the large coherence volume in CQDs.