SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 25: Solid State Quantum Optics
Q 25.2: Vortrag
Mittwoch, 8. März 2023, 11:15–11:30, E001
Enhanced photon emission from hBN defects centers inside a tunable fiber-cavity — •Gregor Bayer1, Florian Feuchtmayr1, Stefan Häußler1,2, Richard Waltrich1, Noah Mendelson3, Chi Li3, David Hunger4, Igor Aharonovich3,5, and Alexander Kubanek1,2 — 1Inst. f. Quantenoptik, Uni Ulm, D — 2Center f. Integ. Q. Science and Techn. (IQst), D — 3School of Math./ Phys. Sciences, Univ. of Tech. Sydney, AUS — 4Phys. Institut, Karlsruhe Inst. of Tech., D — 5ARC Centre of Exc. f. Transf. Meta-Optical Systems, Univ. of Tech. Sydney, AUS
Coupling single quantum emitters to the mode of optical resonators is essential for the realization of quantum photonic devices. We present a hybrid system consisting of defect centers in a few-layer hexagonal boron nitride (hBN) sheet and a fiber-based Fabry-Pérot cavity. The smooth surface of the chemical vapor deposition grown hBN layers enables efficient integration into the cavity. This hybrid platform is operated over a broad spectral range of more than 30 nm. Owing to cavity funneling, large cavity-assisted signal enhancement up to 50-fold and strongly narrowed linewidths are demonstrated, a record for hBN-cavity systems. On top, we implement an excitation and readout scheme for resonant excitation, allowing to establish cavity-assisted photoluminescence excitation spectroscopy. In total, we reach a milestone for the deployment of 2D materials to fiber-based cavities in practical quantum technologies.