Direct Measurement of Quantum Efficiency of Single Photon Emitters in Hexagonal Boron Nitride
Niko Nikolay,Noah Mendelson,Ersan Özelci,Bernd Sontheimer,Florian Böhm,Günter Kewes,Milos Toth,Igor Aharonovich,Oliver Benson +8 more
TLDR
In this article, the lifetime variation of single photon emitters in a few-layer hexagonal boron nitride (hBN) was measured using a metal hemisphere attached to the tip of an atomic force microscope.Abstract:
Single photon emitters in two-dimensional materials are promising candidates for future generation of quantum photonic technologies. In this work, we experimentally determine the quantum efficiency (QE) of single photon emitters (SPE) in few-layer hexagonal boron nitride (hBN). We employ a metal hemisphere that is attached to the tip of an atomic force microscope to directly measure the lifetime variation of the SPEs as the tip approaches the hBN. This technique enables non-destructive, yet direct and absolute measurement of the QE of SPEs. We find that the emitters exhibit very high QEs approaching $(87 \pm 7)\,\%$ at wavelengths of $\approx\,580\,\mathrm{nm}$, which is amongst the highest QEs recorded for a solid state single photon emitter.read more
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Quantum photonics with layered 2D materials
Mikko T. Turunen,Mauro Brotons-Gisbert,Yunyun Dai,Yadong Wang,Eleanor Scerri,Cristian Bonato,Klaus D. Jöns,Zhipei Sun,Brian D. Gerardot +8 more
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Single‐Photon Emitters in Layered Van der Waals Materials
Steffen Michaelis de Vasconcellos,Daniel Wigger,Ursula Wurstbauer,Alexander W. Holleitner,Rudolf Bratschitsch,Tilmann Kuhn +5 more
TL;DR: An overview of single-photon emitters in layered van der Waals materials and their physical properties is given, theoretical concepts for the modeling of their level structure and their coupling to phonons are presented, and techniques for the creation and localization of these emitters are described as discussed by the authors .
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Hexagonal Boron Nitride for Next‐Generation Photonics and Electronics
TL;DR: Hexagonal boron nitride (h−BN) has recently attracted tremendous interest motivated by the extraordinary properties it shows across the fields of optoelectronics, quantum optics, and electronics, being exotic material platforms for various applications as discussed by the authors .