Regensburg 2022 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 25: Poster 1
HL 25.62: Poster
Wednesday, September 7, 2022, 18:00–20:00, P2
Wavelength tuning mechanisms in GaAs based-photonic integrated circuits — •Ulrich Pfister1, Florian Hornung1, Stephanie Bauer1, Eric Reutter2, Michael Jetter1, Simone L. Portalupi1, Jürgen Weis2, and Peter Michler1 — 1Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG), Center for Integrated Quantum Science and Technology (IQST) and SCoPE, Universität Stuttgart — 2Max-Planck-Institut für Festkörperforschung (MPI)
InGaAs quantum dots (QDs) grown in GaAs-based photonic integrated circuits are promising candidates to fulfill the requirements for basic on-chip photonic quantum computing gates. The necessary optical elements like beam splitters, on-chip detectors and waveguide structures have already been realized. An important step towards more complex experiments is to control the emission wavelength of the QDs. Recently, we matched the emission wavelength of a QD with a cavity-waveguide mode by applying strain with piezo electric actuators, resulting in Purcell enhancement [1]. Additionally, we discuss other tuning mechanisms like the crystallization of HfO2 which has been already demonstrated for self-standing GaAs waveguides [2].
[1] Hepp, Stefan et al. Appl. Phys. Lett. 117, 254002 (2020)
[2] Grim, Joel Q. et al. Nat. Mater. 18, 963-969 (2019)