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HL: Fachverband Halbleiterphysik
HL 64: Poster II
HL 64.21: Poster
Donnerstag, 19. März 2020, 10:00–13:00, P1A
Grating Couplers on a III-V Semiconductor Platform for Quantum Photonic Applications — •Stephanie Bauer, Simone Luca Portalupi, Michael Jetter, and Peter Michler — Institut für Halbleiteroptik und Funktionelle Grenzflächen, Center for Integrated Quantum Science and Technology (IQST) and SCoPE, University of Stuttgart, Allmandring 3, 70569 Stuttgart
Quantum photonic integrated circuits are a compact and promising platform for quantum information technologies. In contrast to silicon-based systems, photonic circuits on a III-V semiconductor platform bear the advantage of the direct implementation of quantum dots with their outstanding properties as non-classical light sources. However, some applications require the coupling of light into single mode fibers e.g. for the connection of distinct quantum nodes. For this task, grating couplers are very promising due to the outstanding coupling efficiencies(<85%) and good fiber alignment tolerances.
Here, we present the fabrication and characterisation of waveguide integrated grating couplers on a GaAs/AlGaAs platform. Their coupling efficiency is optimized for a wavelength in the near infrared regime, matching the emission wavelength of InAs quantum dots.