Optical excitonic absorption spectrum in coupled quantum dots due to dipole-dipole interactions
| Autor: | Koo Chul Je |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics education.field_of_study Rabi cycle Condensed matter physics Absorption spectroscopy Condensed Matter::Other Population General Physics and Astronomy Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Molecular physics Dipole Dark state Quantum dot Excited state education Absorption (electromagnetic radiation) |
| Zdroj: | Journal of the Korean Physical Society. 67:896-900 |
| ISSN: | 1976-8524 0374-4884 |
| DOI: | 10.3938/jkps.67.896 |
| Popis: | We investigate the excitonic absorption spectrum induced by dipole-dipole interactions in two coupled quantum dots. The dipoles excited in neighboring quantum dots lead to constructive and destructive interference in excitonic polarizations. We find that the excitonic absorption peaks oscillate with the Rabi oscillation of the population and that two new peaks appear around the region where the bright excitonic state transfers to a dark state. The peaks result from a competition between the two types of interference. Therefore, the excitonic absorption spectrum in the coupled quantum dot system can be controlled by using the dipoles generated in neighboring quantum dots. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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