Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster – Quantum Technologies I

Q 29.19: Poster

Tuesday, March 3, 2026, 17:00–19:00, Philo 2. OG

Single-Shot Fingerprinting of Solid-State Quantum Emitters — •Sonya Kukulina, Julien Chénedé, and Tobias Vogl — Department of Computer Engineering, School of Computation, Information and Technology, Technical University of Munich, 80333 Munich, Germany

Single-photon emitters in hexagonal boron nitride are promising building blocks for scalable quantum technologies, particularly quantum communication, due to their room-temperature stability, bright emission, and compatibility with nanophotonic integration. Realizing robust, integrated quantum devices requires a clear understanding and consistent classification of these defect centers, motivating the development of an efficient, integrated characterization framework.

This work presents an optical measurement platform designed for single-shot fingerprinting of individual quantum emitters. The system integrates confocal scanning photoluminescence imaging, fluorescence lifetime mapping, second-order correlation measurements, spectral analysis, and polarization control over both excitation and emission within a unified, software-automated architecture. Dual excitation channels provide through-objective and side-fiber excitation, while three detection outputs in reflection, transmission, and side channels provide comprehensive readout of optical characteristics. This parallel acquisition scheme enables simultaneous mapping of multiple emitter properties within a single apparatus, supporting systematic identification and yielding consistent benchmarking for the development of solid-state quantum communication systems.

Keywords: Single-Photon Emitters; Quantum Photonics; 2D Materials; Quantum Communication