scholarly journals Telecom-wavelength InAs QDs with low fine structure splitting grown by droplet epitaxy on GaAs(111)A vicinal substrates

2021 ◽  
Vol 118 (13) ◽  
pp. 133102
Author(s):  
A. Tuktamyshev ◽  
A. Fedorov ◽  
S. Bietti ◽  
S. Vichi ◽  
K. D. Zeuner ◽  
...  
Keyword(s):  
Fine Structure ◽  
Droplet Epitaxy ◽  
Fine Structure Splitting ◽  
Structure Splitting ◽  
Telecom Wavelength

scholarly journals Exciton fine-structure splitting of telecom-wavelength single quantum dots: Statistics and external strain tuning

2013 ◽  
Vol 88 (15) ◽  
Author(s):  
Luca Sapienza ◽  
Ralph N. E. Malein ◽  
Christopher E. Kuklewicz ◽  
Peter E. Kremer ◽  
Kartik Srinivasan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fine Structure ◽  
Single Quantum ◽  
Fine Structure Splitting ◽  
Single Quantum Dots ◽  
Structure Splitting ◽  
Telecom Wavelength ◽  
External Strain

scholarly journals Polarization Anisotropies in Strain-Free, Asymmetric, and Symmetric Quantum Dots Grown by Droplet Epitaxy

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 443
Author(s):  
Marco Abbarchi ◽  
Takaaki Mano ◽  
Takashi Kuroda ◽  
Akihiro Ohtake ◽  
Kazuaki Sakoda
Keyword(s):  
Quantum Dots ◽  
Fine Structure ◽  
Systematic Investigation ◽  
Binding Energies ◽  
Droplet Epitaxy ◽  
Wetting Layer ◽  
Fine Structure Splitting ◽  
Symmetric Quantum ◽  
Order Of Magnitude ◽  
Structure Splitting

We provide an extensive and systematic investigation of exciton dynamics in droplet epitaxial quantum dots comparing the cases of (311)A, (001), and (111)A surfaces. Despite a similar s-shell exciton structure common to the three cases, the absence of a wetting layer for (311)A and (111)A samples leads to a larger carrier confinement compared to (001), where a wetting layer is present. This leads to a more pronounced dependence of the binding energies of s-shell excitons on the quantum dot size and to the strong anti-binding character of the positive-charged exciton for smaller quantum dots. In-plane geometrical anisotropies of (311)A and (001) quantum dots lead to a large electron-hole fine interaction (fine structure splitting (FSS) ∼100 μeV), whereas for the three-fold symmetric (111)A counterpart, this figure of merit is reduced by about one order of magnitude. In all these cases, we do not observe any size dependence of the fine structure splitting. Heavy-hole/light-hole mixing is present in all the studied cases, leading to a broad spread of linear polarization anisotropy (from 0 up to about 50%) irrespective of surface orientation (symmetry of the confinement), fine structure splitting, and nanostructure size. These results are important for the further development of ideal single and entangled photon sources based on semiconductor quantum dots.

Exciton fine structure splitting of single InGaAs self-assembled quantum dots

2004 ◽  
Vol 21 (2-4) ◽  
pp. 175-179 ◽  
Author(s):  
A Högele ◽  
B Alèn ◽  
F Bickel ◽  
R.J Warburton ◽  
P.M Petroff ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fine Structure ◽  
Fine Structure Splitting ◽  
Structure Splitting ◽  
Self Assembled

scholarly journals Exciton Fine-Structure Splitting in Self-Assembled Lateral InAs/GaAs Quantum-Dot Molecular Structures

ACS Nano ◽  
2015 ◽  
Vol 9 (6) ◽  
pp. 5741-5749 ◽  
Author(s):  
Stanislav Fillipov ◽  
Yuttapoom Puttisong ◽  
Yuqing Huang ◽  
Irina A. Buyanova ◽  
Suwaree Suraprapapich ◽  
...  
Keyword(s):  
Fine Structure ◽  
Quantum Dot ◽  
Molecular Structures ◽  
Fine Structure Splitting ◽  
Structure Splitting ◽  
Self Assembled ◽  
Gaas Quantum Dot

scholarly journals Quadexciton cascade and fine-structure splitting of the triexciton in a single quantum dot

2016 ◽  
Vol 113 (1) ◽  
pp. 17004 ◽  
Author(s):  
M. R. Molas ◽  
A. A. L. Nicolet ◽  
A. Babiński ◽  
M. Potemski
Keyword(s):  
Fine Structure ◽  
Quantum Dot ◽  
Single Quantum ◽  
Fine Structure Splitting ◽  
Structure Splitting ◽  
Single Quantum Dot
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