ÖPG-CMD Joint Meeting 2026

Shannon entropy and decoherence of polaron in Metal Halide Perovskite pseudopotential quantum dot.

Sep 23, 2026, 10:30 AM

30m

HS 11.03 (University of Graz)

4) Invited talk M01 - Electron correlations and phonons in quantum materials Mini-Colloquium

Speakers

Prof. Alain Jerve FOTUE (university of dschang)Ms S.L. Dongmo Tedoa (university of dschang)

Description

In this work, we evaluated the eigenenergies of the ground and first excited statesofpolaron, usingPekartypevariationnalmethod, inpseudo-harmonic potentialquantumdot. Thiswasdonewiththeaimofinvestigatingthedecoherence time and the Shannon entropy of the quantum dot in three different metal halide perovskites materials (MAPbCl3 , MAPbBr3, and MAPbI3 ). Numerical analysis resutls show that the decoherence time is an increasing function of the dot size, and dispersion coefficient of the phonon in each materials. Additionally, the shannon entropy shows three different behaviors: messy behavior behavior for MAPbBr3, sinuusoïdal behavior for MAPbCl3 materials and a near-sinusoïdal behavior for MAPbI3. These results suggest that, to construct a qubit from a quantum dot, it is essential to select a material with a suitable decoherence time.