Detail publikace
Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure
KŘÁPEK, V. KLENOVSKÝ, P. ŠIKOLA, T.
Originální název
Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
We have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAs1−ySby 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 twosegment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at particular 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.
Klíčová slova
Quantum Dots; Fine structure; GaAs; Excitons
Autoři
KŘÁPEK, V.; KLENOVSKÝ, P.; ŠIKOLA, T.
Vydáno
15. 1. 2016
ISSN
0587-4246
Periodikum
ACTA PHYSICA POLONICA A
Ročník
129
Číslo
1A
Stát
Polská republika
Strany od
A66
Strany do
A69
Strany počet
4
URL