Dresden 2020 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 64: Poster II

HL 64.31: Poster

Thursday, March 19, 2020, 10:00–13:00, P1A

Telecom wavelength InP-based quantum dots for quantum communication — Andrei Kors, Johann Peter Reithmaier, and •Mohamed Benyoucef — Institute of Nanostructure Technologies and Analytics (INA), CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany

Self-assembled semiconductor quantum dots (QDs) emitting at optical fiber communication wavelengths, particularly in the telecom C-band, which offers the lowest attenuation losses in silica fibers is highly interesting for quantum communication applications.

Here, we report our effort on the growth of low density InAs/InP QDs using molecular beam epitaxy, fabrication of InP-based microcavities emitting at telecom wavelengths, and their optical properties. Fabrication of symmetric QDs with low density is obtained by careful control of various growth parameters. Low-temperature single-dot spectroscopy exhibits high-intensity sharp excitonic emission lines with vanishing fine-structure.