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Tunable Fiber‐Cavity Enhanced Photon Emission from Defect Centers in hBN

Häußler, Stefan; Bayer, Gregor; Waltrich, Richard; Mendelson, Noah; Li, Chi; Hunger, David ORCID iD icon 1; Aharonovich, Igor; Kubanek, Alexander
1 Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Realization of quantum photonic devices requires coupling single quantum emitters to the mode of optical resonators. In this work, a hybrid system consisting of defect centers in few-layer hexagonal boron nitride (hBN) grown by chemical vapor deposition and a fiber-based Fabry–Pérot cavity is presented. The sub 10-nm thickness of hBN and its smooth surface enable efficient integration into the cavity mode. This hybrid platform is operated over a broad spectral range larger than 30 nm and its tuneability is used to
explore different coupling regimes. Consequently, very large cavity-assisted signal enhancement up to 50-fold and strongly narrowed linewidths are achieved, which is owing to cavity funneling, a record for hBN-cavity systems. Additionally, an excitation and readout scheme is implemented for resonant excitation that allows to establish cavity-assisted photoluminescence excitation (PLE) spectroscopy. This work marks an important milestone for
the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.

Verlagsausgabe §
DOI: 10.5445/IR/1000134146
Veröffentlicht am 02.07.2021
DOI: 10.1002/adom.202002218
Zitationen: 27
Zitationen: 31
Cover der Publikation
Zugehörige Institution(en) am KIT Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 06.09.2021
Sprache Englisch
Identifikator ISSN: 2195-1071, 2195-1071
KITopen-ID: 1000134146
Erschienen in Advanced optical materials
Verlag John Wiley and Sons
Band 9
Heft 17
Seiten Art.Nr. 2002218
Vorab online veröffentlicht am 17.06.2021
Nachgewiesen in Scopus
Web of Science
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