Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost
Year: 2026
Type: article
Abstract: We measured coherent ultrafast dynamics of exciton complexes in a single strongly-confined InAs quantum dot embedded in a GaAs nanopost. Such a photonic structure combines a wave guiding with a cavity effect and assures an enhanced light-matter coupling over a broad spectral range of 30 nm. Coherence properties of an exciton-biexciton system hosted by a quantum dot are assessed with four-wave mixing microscopy. Our results show that this broad-band photonic structure is an excellent asset to probe coherent couplings in a small set of solid state quantum systems and to investigate the coherence dynamics within the level structure of their excited states.
Source: Solid State Communications
Institutions: Institut polytechnique de Grenoble, Centre National de la Recherche Scientifique, Institut Néel, Université Grenoble Alpes, University of Warsaw, Technical University of Denmark, University of Münster, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Grenoble, University of Tsukuba, Japanese - French lAboratory for Semiconductor physics and Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,960
Funder: Narodowe Centrum Nauki
OpenAlex ID: W7168160231