Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties
arXiv:1708.09758 · doi:10.1063/1.4985259
Abstract
We report on stacked multiple quantum dots (QDs) formed inside inverted pyramidal recesses, which allow for the precise positioning of the QDs themselves. Specifically we fabricated double QDs with varying inter-dot distance and ensembles with more than two nominally highly symmetric QDs. For each, the effect of the interaction between QDs is studied by characterizing a large number of QDs through photoluminescence spectroscopy. A clear red-shift of the emission energy is observed together with a change in the orientation of its polarization, suggesting an increasing interaction between the QDs. Finally we show how stacked QDs can help influencing the charging of the excitonic complexes.
References in corpus (14)
- Entangled Photon Pairs from Semiconductor Quantum Dots
- Direct Observation of Controlled Coupling in an Individual Quantum Dot Molecule
- Towards quantum dot arrays of entangled photon emitters
- Electric-field-induced coherent coupling of the exciton states in a single quantum dot
- Optically generated 2-dimensional photonic cluster state from coupled quantum dots
- Theory of excitonic spectra and entanglement engineering in dot molecules
- A site-controlled quantum dot system offering both high uniformity and spectral purity
- Engineering of selective carrier injection in patterned arrays of single-quantum-dot entangled photon light-emitting diodes
- A solid state source of photon triplets based on quantum dot molecules
- Conditions for entangled photon emission from (111)B site-controlled Pyramidal quantum dots
- Decomposition, diffusion, and growth rate anisotropies in self-limited profiles during metalorganic vapor-phase epitaxy of seeded nanostructures
- Direct observation of metastable hot trions in an individual quantum dot
- Complex optical signatures from quantum dot nanostructures and behavior in inverted pyramidal recesses
- Indium segregation during III-V quantum wire and quantum dot formation on patterned substrates
Cited by in corpus (3)
- Vanishing biexciton binding energy from stacked, MOVPE grown, site-controlled pyramidal quantum dots for twin photon generation
- Biexciton Initialization by Two-Photon Excitation in Site-Controlled Quantum Dots: the Complexity of the Antibinding State Case
- Self-aligned pillar arrays embedding site-controlled single quantum dots for enhanced non-classical light emission