250 citations · 670 across the 17 of their papers we have counts for
17 papers
Strong coupling of monolayer WS2 excitons and surface plasmon polaritons in a planar Ag/WS2 hybrid structure
Nicolas Zorn Morales, Daniel Steffen Rühl, Sergey Sadofev +4
Monolayer (1L) transition metal dichalcogenides (TMDC) are of strong interest in nanophotonics due to their narrow-band intense excitonic transitions persisting up to room temperat…
Surface-Sensitive Raman Scattering by Transferable Nanoporous Plasmonic Membranes
Roman M. Wyss, Günter Kewes, Martin Frimmer +11
Raman spectroscopy is a powerful technique to characterize materials. It probes non-destructively chemical composition, crystallinity, defects, strain and coupling phenomena. Howev…
Direct Measurement of Quantum Efficiency of Single Photon Emitters in Hexagonal Boron Nitride
Niko Nikolay, Noah Mendelson, Ersan Özelci +6
Single photon emitters in two-dimensional materials are promising candidates for future generation of quantum photonic technologies. In this work, we experimentally determine the q…
Heuristic Modeling of Strong Coupling in Plasmonic Resonators
Günter Kewes, Felix Binkowski, Sven Burger +2
Strong coupling of plasmonic excitations and dipolar emitters, such as organic molecules, have been studied extensively in the last years. The questions whether strong coupling can…
Silver nanowires with optimized silica coating as versatile plasmonic resonators
Martin Rothe, Yuhang Zhao, Günter Kewes +7
Metal nanoparticles are the most frequently used nanostructures in plasmonics. However, besides nanoparticles, metal nanowires feature several advantages for applications. Their el…
Riesz-projection-based theory of light-matter interaction in dispersive nanoresonators
Lin Zschiedrich, Felix Binkowski, Niko Nikolay +3
We introduce a theory to analyze the behavior of light emitters in nanostructured environments rigorously. Based on spectral theory, the approach opens the possibility to quantify…
'Flying Plasmons': Fabry-Pèrot Resonances in Levitated Silver Nanowires
Andreas W Schell, Alexander Kuhlicke, Günter Kewes +1
Plasmonic nano structures such as wire waveguides or antennas are key building blocks for novel highly integrated photonics. A quantitative understanding of the optical material pr…
A compact and simple photonic nano-antenna for efficient photon extraction from nitrogen vacancy centers in bulk diamond
Niko Nikolay, Günter Kewes, Oliver Benson
Enhancing the collection efficiency of single emitters via dielectric antennas is a common approach in research dealing with solid-state quantum light sources. Current design conce…
Photostable molecules on chip: integrated single photon sources for quantum technologies
P. E. Lombardi, A. P. Ovvyan, S. Pazzagli +8
The on-chip integration of quantum light sources and nonlinear elements poses a serious challenge to the development of a scalable photonic platform for quantum information and com…
Coupled mode approach to square gradient Bragg reflection resonances in corrugated dielectric waveguides
Otto Dietz, Günter Kewes, Oliver Neitzke +1
We demonstrate the appearance of unexpected reflection resonances in corrugated dielectric waveguides. These are due to the curvature of the boundary. The effect is as strong as th…
Key components for nano-assembled plasmon-excited single molecule non-linear devices
Günter Kewes, Max Schoengen, Giacomo Mazzamuto +8
Tremendous enhancement of light-matter interaction in plasmon-excited molecular hybrid devices allows for non-linearities on the level of single emitters and few photons. This prom…
A fully nanoscopic dielectric laser
Günter Kewes, Rogelio Rodriguez-Oliveros, Kathrin Höfner +3
In this article, we introduce the concept of a dielectric nanolaser that is nanoscopic in all spatial dimensions. Our proposal is based on dielectric nanoparticles of high refracti…
Limitations of Particle-Based Spasers
Günter Kewes, Kathrin Herrmann, Rogelio Rodríguez-Oliveros +3
We present a semi-classical analytic model for spherical core-shell surface plasmon lasers. Within this model, we drop the widely used one-mode approximations in favor of fully ele…
Evidence for graphene plasmons in the visible spectral range probed by molecules
Philipp Lange, Günter Kewes, Nikolai Severin +2
Graphene is considered to be plasmon active only up to the infrared based on combined tight binding model and random phase approximation calculations. Here we show that the optical…
A scanning probe-based pick-and-place procedure for assembly of integrated quantum optical hybrid devices
Andreas W. Schell, Günter Kewes, Tim Schröder +3
Integrated quantum optical hybrid devices consist of fundamental constituents such as single emitters and tailored photonic nanostructures. A reliable fabrication method requires t…
Single Defect Centers in Diamond Nanocrystals as Quantum Probes for Plasmonic Nanostructures
Andreas W. Schell, Günter Kewes, Tobias Hanke +4
We present two applications of a single nitrogen vacancy center in a nanodiamond as quantum probe for plasmonic nanostructures. Coupling to the nanostructures is achieved in a high…
Enhancement of the Zero Phonon Line emission from a Single NV-Center in a Nanodiamond via Coupling to a Photonic Crystal Cavity
Janik Wolters, Andreas W. Schell, Güter Kewes +7
Using a nanomanipulation technique a nanodiamond with a single nitrogen vacancy center is placed directly on the surface of a gallium phosphide photonic crystal cavity. A Purcell-e…