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HL: Fachverband Halbleiterphysik

HL 20: Poster I

HL 20.51: Poster

Tuesday, March 10, 2026, 18:00–20:00, P1

Lateral Electric Field Tuning of Quantum Dots — •Johann Dzeik¹, Christopher Borchers¹, Chenxi Ma¹, Ankita Choudhary¹, Xian Zheng¹, Yiteng Zhang¹, Tom Fandrich¹, Arijit Chakraborty¹, Michael Zopf^1,2, and Fei Ding^1,2 — ¹Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany — ²Laboratorium für Nano- und Quantenengineering, Leibniz Universität Hannover, Schneiderberg 39, 30167, Hannover, Germany

Quantum dots are among the most promising material systems for single photon sources in quantum communication and computation. However, they exhibit a stochastic distribution of emission wavelengths and fine-structure splitting, necessitating post-growth tuning that must be compatible with their fabrication and photonic environment. In this study, we use planar electrodes in parallel and quadrupolar configurations at varying distances to investigate the influence of electric fields on the emission wavelength and fine-structure splitting of GaAs/ AlGaAs quantum dots.

Keywords: Quantum Dots; Stark tuning; Nanotechnology; AlGaAs; GaAs