Regensburg 2019 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 21: Quantum Nanophotonics in Solid State Systems
HL 21.4: Talk
Tuesday, April 2, 2019, 14:45–15:00, H33
Coupling of Quantum Emitter Near-Infrared Radiation to Dielectric Mie Resonators — •Viktoriia Rutckaia1, Joerg Schilling1, Dominik Schulze1, Mihail Petrov2, Frank Heyroth3, Vadim Talalaev1, and Alexey Novikov4 — 1Martin-Luther University, Halle (Saale), Germany — 2ITMO University, Saint-Petersburg, Russia — 3CMAT, Halle (Saale), Germany — 4IPAM RAS, Nizhny Novgorod, Russia
We demonstrate the possibility of the light control at the nanoscale by using Silicon nanodisks with embedded Ge quantum dots (QDs). Our experimental measurements of the microluminescence reshaping in such structures confirm that Ge QD emission is coupled to the localized Mie modes, and agree well with numerical modeling. We discuss the coupling mechanism and show both numerically and experimentally how the design of the resonators affects the radiative decay rate. For the first time, we demonstrate the Purcell effect in Si/Ge QDs structures from time-resolved microluminescence measurements and discuss how it can be further enhanced by exploiting collective Mie modes in oligomer structures. The work contributes to the development of the near-infrared (NIR) light sources for the telecommunication applications.