| Autor: |
Jagsch, Stefan Thomas, Greif, Ludwig Albrecht Thorsten, Reitzenstein, Stephan, Schliwa, Andrei |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 99, 245303 (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.99.245303 |
| Popis: |
Two-photon transition rates are investigated in resonance to the ground state in wurtzite GaN/AlN quantum dots. The ground state transition is two-photon allowed because of the electron-hole separation inherent to polar wurtzite III-nitride heterostructures. We show that this built-in parity breaking mechanism can allow deterministic triggering of single-photon emission via coherent two-photon excitation. Radiative lifetimes obtained for single-photon relaxation are in good agreement with available time-resolved micro-photoluminescence experiments, indicating the reliability of the employed computational framework based on 8-band k.p-wavefunctions. Two-photon singly-induced emission is explored in terms of possible cavity and non-degeneracy enhancement of two-photon processes. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
