Direct optical state preparation of the dark exciton in a quantum dot
| Autor: | Tilmann Kuhn, Doris E. Reiter, Sebastian Lüker |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Electromagnetic field
Physics Condensed Matter - Mesoscale and Nanoscale Physics business.industry Exciton FOS: Physical sciences Condensed Matter Physics Laser Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Electronic Optical and Magnetic Materials Magnetic field law.invention Dark state law Quantum dot Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Optoelectronics business Biexciton Excitation |
| DOI: | 10.48550/arxiv.1511.01778 |
| Popis: | Because of their weak coupling to the electromagnetic field, dark excitons in semiconductor quantum dots possess extremely long lifetimes, which makes them attractive candidates for quantum information processing. On the other hand, the preparation and manipulation of dark states is challenging, because commonly used optical excitation mechanisms are not applicable. We propose an efficient mechanism for the deterministic preparation of the dark exciton exploiting the application of a tilted magnetic field and the optical excitation with a chirped, i.e., frequency modulated, laser pulse. |
| Databáze: | OpenAIRE |
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