Topological signatures in the entanglement of a topological insulator-quantum dot hybrid
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Archivos
Fecha
2022-12
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Nature Research
Nombre de Curso
Licencia CC
Atribución 4.0 Internacional (CC BY 4.0)
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
In the present work, we consider a hybrid plexciton composed of a semiconductor quantum dot interacting with a topological insulator nanoparticle subject to an external magnetic field. Due to the topological magnetoelectricity of the nanoparticle, long-living plasmonic surface modes are induced, which are quantized and coupled with the quantum dot through its polarization operator. We consider the hybrid as an open quantum system, such that environment effects are accounted by the master equation in the Born–Markov approximation. Then, we apply the Peres’ positive partial transpose criterion to quantify the entanglement of the hybrid. We show that this entanglement is a direct signature of the Z2 invariant of topological insulators. © 2022, The Author(s).
Notas
Indexación: Scopus.
Palabras clave
Topological Insulators, Bismuth Selenide, Topology
Citación
Scientific Reports, Volume 12, Issue 1, December 2022 Article number 20856
DOI
10.1038/s41598-022-24939-3