Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 71: Nano-Optics

Q 71.5: Talk

Friday, March 15, 2024, 15:30–15:45, HS 3219

Ultrabright single photon sources from single molecules — •Subhabrata Ghosh, Yijun Wang, Maximilian Luka, and Ilja Gerhardt — light & matter Group, Institute for Solid State Physics, Leibniz University Hannover, Appelstrasse 2, D-30167 Hannover, Germany

A single photon source emits a stream of individual photons at most one at a time and one after the another. Single organic dye molecules are considered as versatile single photon sources due to their very narrow line widths and negligible spectral diffusion. One of the major issues with single photon sources is the engineering towards a maximal photon flux and how to detect these photons then efficiently. The brightness and purity of single photon sources are measured by saturation scans and intensity auto-correlation functions. The high brightness of the single photon sources with very narrow spectral width at 1K will be presented. These sources can play an important role in quantum communications and technology.

Keywords: Single photon sources; Single emitter; Quantum technology