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SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 7: Poster I

HL 7.62: Poster

Montag, 27. März 2023, 13:00–15:00, P2/EG

Towards remote on-chip two-photon interference in gallium arsenide based-photonic integrated circuits — •Ulrich Pfister1, Moritz Speidel1, Florian Hornung1, Stephanie Bauer1, Robert Sittig1, Eric Reutter2, Michael Jetter1, Simone L. Portalupi1, Jürgen Weis2, and Peter Michler11Institut für Halbleiter und Funktionelle Grenzflächen (IHFG), Center for Integrated Quantum Science and Technology (IQST) and SCoPE, University of Stuttgart, Allmandring 3, Germany — 2Max-Planck-Institut für Festkörperforschung (MPI), University of Stuttgart, Heisenbergstraße 1, Germany

InGaAs quantum dots (QDs) are a promising source of single and indistinguishable photons for the on-chip realization of two-photon interference (TPI) with remote QDs. One of the challenges is the inhomogeneously distributed emission frequency of the QDs, which makes frequency tuning necessary. We show that strain-induced emission frequency tuning is applicable for ridge waveguides and it can be considered a promising step towards remote on-chip TPI [1]. Additionally, a successful TPI with one single QD and an on-chip multimode interference beamsplitter as a part of a Mach*Zehnder interferometer has been realized and the feasibility of remote on-chip TPI with MOVPE-grown InGaAs QDs is discussed.
[1] Hepp, S. et al., Appl. Phys. Lett. 117, 254002 (2020)

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