Berlin 2024 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 14: Poster II

HL 14.7: Poster

Monday, March 18, 2024, 15:00–18:00, Poster F

Spectroscopic characterization of site-controlled quantum dots in hexagonal pillar arrays — •Priyabrata Mudi, Martin Podhorský, Maximilian Klonz, Imad Limame, Kartik Gaur, Sven Rodt, and Stephan Reitzenstein — Institute for Solid State Physics, Technical University of Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany

The integration of quantum dots (QDs) into nanoscale structures holds significant promise for advancing the fields of quantum information processing and optoelectronics. This study investigates site-controlled quantum dots embedded in hexagonal pillar arrays, offering precise positioning for applications in fiber coupling. Advanced spectroscopy explores optical properties, exciton dynamics and single photon emission characteristics of these nanostructures, guiding future quantum device design. The work examines growth parameters' influence on QD uniformity, establishing guidelines for fabrication precision. Controllable QD placement via the buried stressor concept is crucial for achieving reproducible and reliable quantum systems. The gained knowledge informs design principles for quantum systems, with implications for computing, secure communication, and optoelectronic devices.

Keywords: Quanrtum dot; Micro-pillar; Single photon emission; Nanostructure; Quantum technology