Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots
Vol. 132 No. 1B (2023), Original Article
Vol. 132 No. 1B (2023)

Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots

Original Article
https://doi.org/10.26459/hueunijns.v132i1B.6909
Published 2023-06-30
Le Thi Dieu Hien
University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Le Thi Ngoc Bao
University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Dinh Nhu Thao*
University of Education, Hue University, 34 Le Loi St., Hue, Vietnam
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Keywords

exciton quantum beat
disk-shaped quantum dot
GaAs/AlAs

How to Cite

1.
Le TDH, Le TNB, Dinh NT. Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots. hueuni-jns [Internet]. 2023Jun.30 [cited 2024May2];132(1B):5-13. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6909
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Abstract

Using the renormalized wavefunction approach, we examined the excitonic quantum beat in a three-level system in disk-shaped quantum dots. The non-stationary electron wave function and the time-dependent exciton absorption intensity under the effect of an intensity pump laser that resonates with two excited electron states were also provided. Our numerical findings demonstrate that the time-dependent exciton absorption intensity takes the shape of a periodic oscillation when the quantum dot is subjected to a powerful resonant pump laser. This is clear evidence that quantum beats appears in the quantum disk. Additionally, the dot radius and the pump field detuning significantly affect the beat characteristics, such as frequency and amplitude.

https://doi.org/10.26459/hueunijns.v132i1B.6909
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