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QI: Fachverband Quanteninformation

QI 25: Materials and Devices for Quantum Technology II (joint session HL/QI)

QI 25.3: Talk

Thursday, March 21, 2024, 14:45–15:00, EW 203

Near-Ideal Room Temperature Single Photon Emitters hosted in hexagonal Boron Nitride for Quantum Optics Application — •Tjorben Matthes^{1, 2}, Anand Kumar², Chanaprom Cholsuk^{1, 2}, Mohammad Nasimuzzaman Mishuk², Josefine Krause², Mouli Hazra², Kabilan Sripathy², and Tobias Vogl^{1, 2} — ¹Technical University of Munich, TUM School of Computation, Information and Technology, Arcisstraße 21, 80333 München — ²Friedrich Schiller University Jena, Institute of Applied Physics, Albert-Einstein-Straße 15, 07745 Jena

In this talk, we will give an insight into our work done on single photon emitters hosted in hexagonal Boron Nitride (hBN) and the integration of those emitters into integrated photonics chips that have laser-written waveguides with controllable crosslinks at their heart.

We recently demonstrated the deterministic creation of identical single-photon emitters in hexagonal Boron Nitride that show exceptional characteristics regarding purity, stability, and brightness. In a follow-up work, we determined additional optical characteristics and carefully compared them to those predicted for numerous defect complexes by density functional theory (DFT) calculations. Currently, we are extending this work, bringing us closer to understanding the actual nature of the defect creation.

Furthermore, we are working on the technical utilisation of single photon emitters for quantum communication and optical circuits. In particular, we focus on laser-written waveguides that can be used for numerous applications having crosslinks with tunable splitting ratios.

Keywords: 2D Materials; Single Photon Emitters; Quantum Optics; Integrated Photonics