Magneto-optical characterization of trions in symmetric InP-based quantum dots for quantum communication applications
| Autor: | Mohamed Benyoucef, Marek Burakowski, W. Rudno-Rudziński, Anna Musiał, Johann Peter Reithmaier |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
FOS: Physical sciences
quantum dots 02 engineering and technology Electron 01 natural sciences lcsh:Technology Article Condensed Matter::Materials Science magneto-optics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences General Materials Science telecom wavelengths 010306 general physics Spin (physics) lcsh:Microscopy lcsh:QC120-168.85 Physics Condensed matter physics lcsh:QH201-278.5 Condensed Matter - Mesoscale and Nanoscale Physics lcsh:T InP-based nanostructures 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Magnetic field trions Quantum dot lcsh:TA1-2040 Qubit Diamagnetism lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Trion 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) Molecular beam lcsh:TK1-9971 |
| Zdroj: | Materials Volume 14 Issue 4 Materials, Vol 14, Iss 942, p 942 (2021) |
| Popis: | Magneto-optical parameters of trions in novel large and symmetric InP-based quantum dots, uncommon for molecular beam epitaxy grown nanostructures, with emission in the third telecom window, are measured in Voigt and Faraday configurations of external magnetic field. The diamagnetic coefficients are found to be in the range of 1.5-4 {\mu}eV/{\T^2}, and 8-15 {\mu}eV/{\T^2}, respectively out of plane and in plane of the dots. The determined values of diamagnetic shifts are related to the anisotropy of dot sizes. Trion g-factors are measured to be relatively small, in the range of 0.3-0.7 and 0.5-1.3, in both configurations respectively. Analysis of single carrier g-factors, based on the formalism of spin-correlated orbital currents, leads to the similar values for hole and electron of {\sim} 0.25 for Voigt and {\g_e} {\approx} -5; {\g_h} {\approx} +6 for Faraday configuration of magnetic field. Values of g-factors close to zero measured in Voigt configuration make the investigated dots promising for electrical tuning of g-factor sign, required for schemes of single spin control in qubit applications. Comment: 16 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|