Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 75: Quantum Technologies (Solid State Systems) (joint session Q/QI)

Q 75.1: Vortrag

Freitag, 14. März 2025, 14:30–14:45, HS I

Low Temperature Spectroscopy of hBN Quantum Emitters — •Mouli Hazra¹, Manuel Rieger², Anand Kumar¹, Mohammad Nasimuzzaman Mishuk¹, Tjorben Matthes¹, Viviana Villafane^2,3, Jonathan J. Finely², and Tobias Vogl¹ — ¹Department of Computer Engineering, TUM School of Computation Information and Technology, Technical University of Munich, 80333 Munich, Germany — ²Walter Schottky institute, School of Natural Sciences and MQST, Technical University of Munich, 85748 Garching, Germany. — ³Walter Schottky Institute, School of Computation, Information and Technology and MQST, Technical University of Munich, 85748 Garching, Germany

Hexagonal boron nitride (hBN) hosts a large range of high quality single-photon emitters (SPEs) making it promising candidate for quantum technology applications. The practical integration of these emitters requires precise control of emission wavelengths, spatial localization, and directionality of those emitters. In this work, we have created localized, spectrally stable SPEs using electron beam irradiation without any pre- or post-treatment. To understand their chemical nature, we performed cryogenic experiments to minimize thermal broadening and gain insights into their optical and structural characteristics. We studied how excitation wavelength and temperature influence the emission. This work marks a significant step toward deterministic, high-quality SPEs in hBN, advancing integrated quantum photonic technologies.

Keywords: hBN; Single Photon Emitters; Photoluminescence excitation (PLE)