T. Saito   T. Nakaoka   Y. Arakawa   
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 42(10) 2532-2535 2010年9月
We have calculated the energies of the lowest four excitons (two bright states and two dark states) in an InAs/GaAs quantum dot under the longitudinal magnetic field, B. The calculations were carried out using the strain-dependent 8-band k . p the...
PHYSICAL REVIEW B 82(8) 085308-1-085308-5 2010年8月 [査読有り]
We report on direct observation of spatial and optical luminescence switching (on and off condition) due to collapse of the coupling conditions of quantum dots (QDs) pair. In particular, one could observe that the relative intensities between two ...
Rabi oscillations of telecommunication-band excitons and biexcitons have successfully been observed by the photocurrent spectroscopy in a single InAs/GaAs quantum dot. We show the excitonic Rabi oscillations up to the rotation angle of 8 pi as wel...
JAPANESE JOURNAL OF APPLIED PHYSICS 49(6) 06GJ09-1-06GJ09-4 2010年
Anisotropic Rabi oscillation in the exciton state in a single InAs/GaAs quantum dot (QD) was demonstrated in the telecommunication-band by selecting two orthogonal polarization angles of the excitation laser. Our InAs QDs were embedded in an intri...
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7, NO 10 7(10) 2578-2581 2010年 [査読有り]
We investigated the effect of acoustic phonon mediated damping on a telecommunication-band excitonic Rabi oscillation in a single quantum dot (QD). The InAs/GaAs QDs were capped with an InGaAs strain-reducing layer (SRL) to shift the exciton energ...