Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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HUJOS
2023-06-01
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| Series: | Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên |
| Subjects: | |
| Online Access: | https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6909 |
| _version_ | 1797302267426111488 |
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| author | Thi Dieu Hien Le Thi Ngoc Bao Le Nhu Thao Dinh |
| author_facet | Thi Dieu Hien Le Thi Ngoc Bao Le Nhu Thao Dinh |
| author_sort | Thi Dieu Hien Le |
| collection | DOAJ |
| description |
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.
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| first_indexed | 2024-03-07T23:34:20Z |
| format | Article |
| id | doaj.art-3f1e17676fd24dfe9ec2e4b0fcc1afbf |
| institution | Directory Open Access Journal |
| issn | 1859-1388 2615-9678 |
| language | English |
| last_indexed | 2024-03-07T23:34:20Z |
| publishDate | 2023-06-01 |
| publisher | HUJOS |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên |
| spelling | doaj.art-3f1e17676fd24dfe9ec2e4b0fcc1afbf2024-02-20T09:14:53ZengHUJOSTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên1859-13882615-96782023-06-011321B10.26459/hueunijns.v132i1B.6909Exciton quantum beats in GaAs/AlAs disk-shaped quantum dotsThi Dieu Hien Le0Thi Ngoc Bao Le1Nhu Thao Dinh2University of Sciences, Hue University, 77 Nguyen Hue St., Hue, VietnamUniversity of Sciences, Hue University, 77 Nguyen Hue St., Hue, VietnamUniversity of Education, Hue University, 34 Le Loi St., Hue, Vietnam 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://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6909exciton quantum beatdisk-shaped quantum dotGaAs/AlAs |
| spellingShingle | Thi Dieu Hien Le Thi Ngoc Bao Le Nhu Thao Dinh Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên exciton quantum beat disk-shaped quantum dot GaAs/AlAs |
| title | Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots |
| title_full | Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots |
| title_fullStr | Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots |
| title_full_unstemmed | Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots |
| title_short | Exciton quantum beats in GaAs/AlAs disk-shaped quantum dots |
| title_sort | exciton quantum beats in gaas alas disk shaped quantum dots |
| topic | exciton quantum beat disk-shaped quantum dot GaAs/AlAs |
| url | https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6909 |
| work_keys_str_mv | AT thidieuhienle excitonquantumbeatsingaasalasdiskshapedquantumdots AT thingocbaole excitonquantumbeatsingaasalasdiskshapedquantumdots AT nhuthaodinh excitonquantumbeatsingaasalasdiskshapedquantumdots |