Publications (8)
Characterization of the Shell Structure in Coupled Quantum Dots through Resonant Optical Probing
Mauricio Garrido, Kushal C. Wijesundara, Swati Ramanathan +4
Excited states in single quantum dots (QDs) have been shown to be useful for spin state initialization and manipulation. For scalable quantum information processing it is necessary…
Engineering electron and hole tunneling with asymmetric InAs quantum dot molecules
A. S. Bracker, M. Scheibner, M. F. Doty +6
Most self-assembled quantum dot molecules are intrinsically asymmetric with inequivalent dots resulting from imperfect control of crystal growth. We have grown vertically-aligned p…
Electric field tunable exchange interaction in InAs/GaAs coupled quantum dots
Kushal C. Wijesundara, Mauricio Garrido, Swati Ramanathan +4
Spin manipulation in coupled quantum dots is of interest for quantum information applications. Control of the exchange interaction between electrons and holes via an applied electr…
Antibonding ground states in semiconductor artificial molecules
M. F. Doty, J. I. Climente, M. Korkusinski +4
The spin-orbit interaction is a crucial element of many semiconductor spintronic technologies. Here we report the first experimental observation, by magneto-optical spectroscopy, o…
Spin Fine Structure in Optically Excited Quantum Dot Molecules
M. Scheibner, M. F. Doty, I. V. Ponomarev +5
The interaction between spins in coupled quantum dots is revealed in distinct fine structure patterns in the measured optical spectra of InAs/GaAs double quantum dot molecules cont…
Photoluminescence Spectroscopy of the Molecular Biexciton in Vertically Stacked Quantum Dot Pairs
M. Scheibner, I. V. Ponomarev, E. A. Stinaff +5
We present photoluminescence studies of the molecular neutral biexciton-exciton spectra of individual vertically stacked InAs/GaAs quantum dot pairs. We tune either the hole or the…