- Tytuł:
- Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure
- Autorzy:
-
Křápek, V.
Klenovský, P.
Šikola, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1398562.pdf
- Data publikacji:
- 2016-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.35.-y
73.21.La
81.05.Ea - Opis:
- We have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAs_{1-y}Sb_y capping layer. The character of the confinement can be adjusted by the Sb content. We have found that upon the transition from type-I to type-II confinement the hole wave functions change the topology from a compact shape to a two-segment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at narticular compositions. Additionally, a high exciton radiative recombination probability is preserved even in type-II. This allows to design strongly luminescent quantum dots with naturally low fine structure splitting, which could serve as sources of entangled photon pairs for quantum communication.
- Źródło:
-
Acta Physica Polonica A; 2016, 129, 1a; A-66-A-69
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł