547 citations · 9.5k across the 169 of their papers we have counts for
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Inducing room-temperature valley polarization of excitonic emission in transition metal dichalcogenide monolayers
Sergii Morozov, Torgom Yezekyan, Christian Wolff +2
The lowest energy states in transition metal dichalcogenide (TMD) monolayers follow valley selection rules, which have attracted vast interest due to the possibility of encoding an…
Nonlocal effects in atom-plasmon interactions
Mikkel Have Eriksen, Christos Tserkezis, N. Asger Mortensen +1
Nonlocal and quantum mechanical phenomena in noble metal nanostructures become increasingly crucial when the relevant length scales in hybrid nanostructures reach the few-nanometer…
Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals
Saskia Fiedler, Sergii Morozov, Danylo Komisar +8
Impurity-vacancy centers in diamond offer a new class of robust photon sources with versatile quantum properties. While individual color centers commonly act as single-photon sourc…
Nonlinear photoluminescence in gold thin films
A. Rodríguez Echarri, F. Iyikanat, S. Boroviks +3
Promising applications in photonics are driven by the ability to fabricate crystal-quality metal thin films of controlled thickness down to a few nanometers. In particular, these m…
Fundamental issues with light propagation through -symmetric systems
Fedor Shuklin, Christos Tserkezis, N. Asger Mortensen +1
We analyse the emergence of unphysical superluminal group velocities in Su--Schrieffer--Heeger (SSH) parity-time () symmetric chains, and explore the origins of such…
Disentangling cathodoluminescence spectra in nanophotonics: particle eigenmodes vs transition radiation
Saskia Fiedler, P. Elli Stamatopoulou, Artyom Assadillayev +6
Cathodoluminescence spectroscopy performed in an electron microscope has proven a versatile tool for analysing the near- and far-field optical response of plasmonic and dielectric…
Extremely confined gap plasmon modes: when nonlocality matters
Sergejs Boroviks, Zhan-Hong Lin, Vladimir A. Zenin +7
Historically, the field of plasmonics has been relying on the framework of classical electrodynamics, with the local-response approximation of material response being applied even…
Purifying single photon emission from giant shell CdSe/CdS quantum dots at room temperature
Sergii Morozov, Stefano Vezzoli, Alina Myslovska +4
Giant shell CdSe/CdS quantum dots are bright and flexible emitters, with near-unity quantum yield and suppressed blinking, but their single photon purity is reduced by efficient mu…
Brobdingnagian photon bunching in cathodoluminescence of excitons in WS monolayer
Saskia Fiedler, Sergii Morozov, Leonid Iliushyn +7
Cathodoluminescence spectroscopy in conjunction with second-order auto-correlation measurements of allows to extensively study the synchronization of quantum light sources…
Polaritons in two-dimensional parabolic waveguides
T. P. Rasmussen, P. A. D. Gonçalves, Sanshui Xiao +3
The suite of highly confined polaritons supported by two-dimensional (2D) materials constitutes a versatile platform for nano-optics, offering the means to channel light on deep-su…
Analytical description of the 1s exciton linewidth temperature-dependence in transition metal dichalcogenides
J. C. G. Henriques, N. A. Mortensen, N. M. R. Peres
We obtain an analytical expression for the linewidth of the 1s-exciton as a function of temperature in transition metal dichalcogenides. The total linewidth, as function of tempera…
Surface-response functions obtained from equilibrium electron-density profiles
N. Asger Mortensen, P. A. D. Gonçalves, Fedor A. Shuklin +4
Surface-response functions are one of the most promising routes for bridging the gap between fully quantum-mechanical calculations and phenomenological models in quantum nanoplasmo…
Optical response of noble metal nanostructures: Quantum surface effects in crystallographic facets
A. Rodríguez Echarri, P. A. D. Gonçalves, C. Tserkezis +3
Noble metal nanostructures are ubiquitous elements in nano-optics, supporting plasmon modes that can focus light down to length scales commensurate with nonlocal effects associated…
Quantum Surface-Response of Metals Revealed by Acoustic Graphene Plasmons
P. A. D. Gonçalves, Thomas Christensen, N. M. R. Peres +5
A quantitative understanding of the electromagnetic response of materials is essential for the precise engineering of maximal, versatile, and controllable light--matter interaction…
Manipulating the photonic Hall effect with hybrid Mie-exciton resonances
P. Elli Stamatopoulou, Vassilios Yannopapas, N. Asger Mortensen +1
We examine the far-field optical response, under-plane wave excitation in the presence of a static magnetic field, of core-shell nanoparticles involving a gyroelectric component, e…
Role of diffusive surface scattering in nonlocal plasmonics
Mark. K. Svendsen, Christian Wolff, Antti-Pekka Jauho +2
The recent generalised nonlocal optical response (GNOR) theory for plasmonics is analysed, and its main input parameter, namely the complex hydrodynamic convection-diffusion consta…
Monitoring strong coupling in nonlocal plasmonics with electron spectroscopies
Grigorios P. Zouros, Georgios D. Kolezas, N. Asger Mortensen +1
Plasmon-exciton polaritons provide exciting possibilities to control light-matter interactions at the nanoscale by enabling closer investigation of quantum optical effects and faci…
Probing Graphene's Nonlocality with Singular Metasurfaces
E. Galiffi, P. A. Huidobro, P. A. D. Gonçalves +2
Singular graphene metasurfaces, conductivity gratings realized by periodically suppressing the local doping level of a graphene sheet, have recently been proposed to efficiently ha…
On the applicability of quantum-optical concepts in strong-coupling nanophotonics
C. Tserkezis, A. I. Fernández-Domínguez, P. A. D. Gonçalves +7
Rooted in quantum optics and benefiting from its well-established foundations, strong coupling in nanophotonics has experienced increasing popularity in recent years. With nanophot…
Plasmon-Emitter Interactions at the Nanoscale
P. A. D. Gonçalves, Thomas Christensen, Nicholas Rivera +3
Plasmon-emitter interactions are of paramount importance in modern nanoplasmonics and are generally maximal at short emitter-surface separations. However, when the separation falls…
Enhanced ponderomotive force in graphene due to interband resonance
Christian Wolff, Christos Tserkezis, N. Asger Mortensen
We analyze intrinsic nonlinearities in two-dimensional polaritonic materials interacting with an optical wave. Focusing on the case of graphene, we show that the second-order nonli…
Single-crystalline gold nanodisks on WS mono- and multilayers: Strong coupling at room temperature
Mathias Geisler, Ximin Cui, Jianfang Wang +11
Engineering light-matter interactions up to the strong-coupling regime at room temperature is one of the cornerstones of modern nanophotonics. Achieving this goal will enable new p…
Stimulated plasmon polariton scattering
Christian Wolff, N. Asger Mortensen
The plasmon and phonon polaritons of two-dimensional (2d) and van-der-Waals materials have recently gained substantial interest. Unfortunately, they are notoriously hard to observe…
Edge-dependent reflection and inherited fine structure of higher-order plasmons in graphene nanoribbons
Kåre Obel Wedel, N. Asger Mortensen, Kristian S. Thygesen +1
We investigate higher-order plasmons in graphene nanoribbons, and present how electronic edge states and wavefunction fine structure influence the graphene plasmons. Based on neare…