Refractive index change in a double quantum dot structure
The density matrix theory models the refractive index change in a double quantum dot (DQD) system. The orthogonalized plane wave (OPW) is considered for wetting layer (WL)-quantum dot (QD) transitions, and the transition momenta are calculated. The modeling here considers all possible QD-QD and WL-Q...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-12-01
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| Series: | Results in Optics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666950125001087 |
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| Summary: | The density matrix theory models the refractive index change in a double quantum dot (DQD) system. The orthogonalized plane wave (OPW) is considered for wetting layer (WL)-quantum dot (QD) transitions, and the transition momenta are calculated. The modeling here considers all possible QD-QD and WL-QD transitions, which is another key property of this work. The results show that the tunneling increment raises the refractive change (RIC) to a huge value. Reducing the probe field enables the superluminal propagation of light, which is of viable importance in optical applications. A weaker probe or a strong pump with moderate tunneling can result in the highest value of RIC. |
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| ISSN: | 2666-9501 |