Numerical study of Valence Band states evolution in AlGaAs [111] QDs systems

• URL: http://arxiv.org/abs/2301.03490v2
• Date: Sat, 15 Jul 2023 21:26:19 GMT
• Title: Numerical study of Valence Band states evolution in AlGaAs [111] QDs systems
• Authors: M. Lazarev
• Abstract summary: We focus on the optical properties study of GaAs/AlGaAs [111] QDs and Quantum Dot Molecules (QDMs) Numerical simulation was carried out using Luttinger Kohn model adapted to the particular use case of QDs in inverted pyramids.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum Dots are very attractive nanostructures from an application point of view due to their unique optical properties. Optical properties and Valence Band states character was numerically investigated from the effect of nanostructure geometry and composition. Numerical simulation was carried out using Luttinger Kohn model adapted to the particular use case of QDs in inverted pyramids. We present the source code of the 4 band Luttinger Kohn model that can be used to model AlGaAs or InGaAs nanostructures. Here we focus on the optical properties study of GaAs/AlGaAs [111] QDs and Quantum Dot Molecules (QDMs). We examine the dependence of Ground State (GS) optical properties on their structural parameters and predict optimal parameters of the QD and QDM systems to achieve the dynamic control of GS polarization by the applied electric field.

Related papers

• Geometric Antibunching and Directional Shaping of Photon Anticorrelations [44.99833362998488]
  We find a new mechanism for photon anticorrelation, termed as geometric antibunching. This phenomenon is completely agnostic to the quantum state of the emitters.
  arXiv  Detail & Related papers  (2024-10-23T14:29:15Z)
• Effective particles in a multishell nanostructure with hardcore [0.0]
  In-medium effective carriers with position-dependent mass in a multishell heterostructure are analytically studied. We obtain the exact spectrum of three-dimensional bound eigenstates and the scattering wave-functions for several von Roos ordering classes.
  arXiv  Detail & Related papers  (2024-10-07T21:48:12Z)
• Unveiling the 3D Morphology of Epitaxial GaAs/AlGaAs Quantum Dots [3.977816506983023]
  Strain-free GaAs/AlGaAs semiconductor quantum dots (QDs) grown by droplet etching and nanohole infilling (DENI) are highly promising candidates for the on-demand generation of indistinguishable and entangled photon sources. The spectroscopic fingerprint and quantum optical properties of QDs are significantly influenced by their morphology. This study enhances the understanding of DENI QD morphology and provides a fundamental three-dimensional structural model for simulating and optimizing their optoelectronic properties.
  arXiv  Detail & Related papers  (2024-05-25T05:50:00Z)
• Non-classical states of light after high-harmonic generation in semiconductors: a Bloch-based perspective [0.0]
  We investigate the process of high-harmonic generation in semiconductors under a quantum optical perspective. We demonstrate the generation of non-classical light states similar to those found when driving atomic systems. This study provides insights into HHG in semiconductors and its potential for generating non-classical light sources.
  arXiv  Detail & Related papers  (2023-09-25T18:00:22Z)
• Photonic Quantum Computing For Polymer Classification [62.997667081978825]
  Two polymer classes visual (VIS) and near-infrared (NIR) are defined based on the size of the polymer gaps. We present a hybrid classical-quantum approach to the binary classification of polymer structures.
  arXiv  Detail & Related papers  (2022-11-22T11:59:52Z)
• Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
  We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
  arXiv  Detail & Related papers  (2022-06-03T14:52:34Z)
• Fine structure splitting analysis of cavity-enhanced telecom-wavelength InAs quantum dots grown on a GaAs(111)A vicinal substrate [0.0]
  Entangled light can be generated by solid state quantum emitters with naturally low fine structure splitting. We present droplet epitaxy of telecom-wavelength InAs QDs within an optical cavity on a vicinal (2deg miscut) GaAs(111)A substrate.
  arXiv  Detail & Related papers  (2022-02-23T11:28:52Z)
• Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
  We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
  arXiv  Detail & Related papers  (2020-11-16T08:03:44Z)
• Metasurfaces for Quantum Photonics [62.997667081978825]
  Development of metasurfaces allowed to replace bulky optical assemblies with thin nanostructured films. Recent progress in the field of quantum-photonics applications of metasurfaces.
  arXiv  Detail & Related papers  (2020-07-29T10:14:43Z)
• Quantum electrodynamics in a topological waveguide [47.187609203210705]
  In this work we investigate the properties of superconducting qubits coupled to a metamaterial waveguide based on a photonic analog of the Su-Schrieffer-Heeger model. We explore topologically-induced properties of qubits coupled to such a waveguide, ranging from the formation of directional qubit-photon bound states to topology-dependent cooperative radiation effects.
  arXiv  Detail & Related papers  (2020-05-08T00:22:17Z)
• Surface-passivated high-Q GaAs photonic crystal nanocavity with quantum dots [0.0]
  Photonic crystal (PhC) nanocavities with high quality (Q) factors have attracted much attention because of their strong spatial and temporal light confinement capability. Here, we demonstrate a significant improvement of Q factors up to 160,000 in GaAs active PhC nanocavities using a sulfur-based surface passivation technique.
  arXiv  Detail & Related papers  (2019-12-27T03:26:25Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.