DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2022 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HL: Fachverband Halbleiterphysik

HL 36: Materials and Devices for Quantum Technology 2

HL 36.10: Talk

Thursday, September 8, 2022, 17:30–17:45, H36

Bright InAs quantum dot based single-photon sources at telecom wavelengths — •Monica Pengerla1, Alkaales Mohanad2, Ranbir Kaur2, Jan Donges1, Lucas Bremer1, Johannes Schall1, Sven Rodt1, Mohamed Benyoucef2, and Stephan Reitzenstein11Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstraße 36, D-10623 — 2Institute of Nanostructure Technologies and Analytics (INA), Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany

Quantum dot (QD) based single-photon sources are key elements of photonic quantum networks. Most interesting are sources emitting at telecom wavelengths to enable long distance quantum communication. Here, we report on deterministically fabricated single-photon sources based on InAs QDs grown on InP substrate. Numerical simulations of such QD heterostructures with backside distributed Bragg reflector and reveal photon extraction efficiency exceeding 50% when integration the QD into mesa or circular Bragg grating structures. The numerical designs are implemented by deterministic device processing using machine learning enhanced in-situ electron beam lithography. Micro-photoluminescence studies reveal the excellent optical and quantum optical properties of the fabricated quantum devices.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2022 > Regensburg