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HL: Fachverband Halbleiterphysik

HL 7: Poster I

HL 7.65: Poster

Monday, March 27, 2023, 13:00–15:00, P2/EG

Origin of Antibunching in Resonance Fluorescence — •Lukas Hanschke¹, Eva Schöll¹, Eduardo Zubizarreta Casalengua^2,3, Melina Peter⁴, Ailton Garcia Jr.⁴, Saimon F. Covre da Silva⁴, Santanu Manna⁴, Armando Rastelli⁴, Kai Müller⁵, Fabrice P. Laussy³, Elena del Valle², and Klaus D. Jöns¹ — ¹PhoQS, CeOPP, and Department of Physics, Paderborn University — ²Departamento de Fisica Teorica de la Materia Condensada, Universidad Autonoma de Madrid — ³Faculty of Science and Engineering, University of Wolverhampton — ⁴Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz — ⁵Walter Schottky Institute, Technical University of Munich

Resonance fluorescence, the coherent emission of a quantum two-level system under weak resonant driving, exhibits sub-natural linewidth and inherits the coherence properties of the excitation laser. While previous experiments suggest that this emission also maintains antibunched, our results prove recent theoretical insights into the origin of the antibunching and the underlying interplay between the coherent and incoherent emission of the quantum system. This allows us to specifically manipulate the composition of the resonance fluorescence by frequency filtering and interference with the excitation laser field to enable single photons with sub-natural linewidth [PRL 123, 170402 (2020)].