233 citations · 1.3k across the 42 of their papers we have counts for
45 papers
An S-matrix Formalism for the Nonclassical Optical Response of Plasmonic Nanowires
Xin Zheng, Christos Tserkezis, Christos Mystilidis +2
This paper reports a computational scheme which predicts the light-matter interaction in multiple mesoscopic plasmonic nanowires (NWs), each of which includes concentric or eccentr…
Surface quantum response of plasmonic heterodimers: revealing the hidden nonlocality
Ida Juliane Bundgaard, Christos Mystilidis, Frederik Wulff Christensen +7
We probe the quantum response of plasmonic heterodimers with extended (plane waves) and localized (point dipoles and electron beams) sources. Implementing the surface-response form…
Gibbs Phenomenon and Friedel Oscilations: Similarities, Differences, and the Educational Potential of their Comparison
Christos Mystilidis, Christos Tserkezis, George Fikioris
We explore the similarities and differences between the Gibbs phenomenon in partial Fourier representations of discontinuous signals and Friedel oscillations in the electron densit…
Time- and frequency-domain study for electron beams penetrating dielectric nanospheres: fingerprints of Cherenkov and transition radiation
Wenhua Zhao, Christos Tserkezis, N. Asger Mortensen +1
We present a theoretical study of Cherenkov and transition radiation for swift electron beams penetrating dielectric nanospheres using material models of different sophistication.…
Probe- and Substrate-Dependent Visibility of Mie Resonances in Silicon Nanospheres
Yonas Lebsir, Huatian Hu, P. A. D. Gonçalves +5
Silicon nanospheres are high-quality optical resonators and promising building blocks for Mie-tronic devices. While the Mie resonances of an isolated sphere are well understood, pr…
Probing strong coupling in core--shell nanoparticles with fast electron beams
Annika Brandt, Christos Tserkezis, Carsten Rockstuhl +1
Collective optical excitations, such as localized surface plasmons in metallic nanoparticles and Mie resonances in high-index dielectrics, play a central role in nanoscale light--m…
Microscopic screening theory for excitons in two-dimensional materials: A bridge between effective models and ab initio descriptions
P. Ninhos, A. J. Uría-Álvarez, C. Tserkezis +2
We present a computational approach for exciton calculations in two-dimensional (2D) materials within the Bethe-Salpeter equation (BSE) framework, employing an atomistic descriptio…
Screened topological plasmons in graphene plasmonic crystals
André Octávio Soares, Christos Tserkezis, N. M. R. Peres
We study topological effects in an one-dimensional plasmonic crystal formed by the screened plasmons emerging in a periodically modulated graphene sheet, placed on top of a metalli…
Roadmap on Nonlocality in Photonic Materials and Metamaterials
Francesco Monticone, N. Asger Mortensen, Antonio I. Fernández-Domínguez +63
Photonic technologies continue to drive the quest for new optical materials with unprecedented responses. A major frontier in this field is the exploration of nonlocal (spatially d…
Tunable exciton polaritons in biased bilayer graphene
V. G. M. Duarte, P. Ninhos, C. Tserkezis +3
By harnessing the unique properties of bilayer graphene, we present a flexible platform for achieving electrically tunable exciton polaritons within a microcavity. Using a semiclas…
Quantum-hydrodynamic modal perspective on plasmonic gap structures
Pu Zhang, Christos Tserkezis, N. Asger Mortensen
Plasmonic gap structures are among the few configurations capable of generating extreme light confinement, finding applications in surface-enhanced spectroscopy, ultrasensitive det…
Non-Markovian effects in long-range polariton-mediated energy transfer
Kristin B. Arnardottir, Piper Fowler-Wright, Christos Tserkezis +2
Intramolecular energy transfer driven by near-field effects plays an important role in applications ranging from biophysics and chemistry to nano-optics and quantum communications.…
Self-similar plasmonic nanolenses: mesoscopic ensemble averaging and chiral light-matter interactions
Nikolaos Kyvelos, N. Asger Mortensen, Xuezhi Zheng +1
We investigate how the near-field enhancement of self-similar nanolenses, made of three plasmonic nanospheres with decreasing sizes and separations, is affected by quantum correcti…
Dirac plasmon polaritons and magnetic modes in topological-insulator nanoparticles
Nikolaos Kyvelos, Vassilios Yannopapas, N. Asger Mortensen +1
We demonstrate the existence of previously unreported magnetic modes with record-high magnetic Purcell factors in topological-insulator nanospheres. Focusing on bismuth selenide (B…
Tunable exciton polaritons in band-gap engineered hexagonal boron nitride
Pedro Ninhos, Christos Tserkezis, N. Asger Mortensen +1
We show that hexagonal boron nitride (hBN), a two-dimensional insulator, when subjected to an external superlattice potential forms a new paradigm for electrostatically tunable exc…
Quantum-informed plasmonics for strong coupling: the role of electron spill-out
Ida Juliane Bundgaard, Christian Nicolaisen Hansen, P. Elli Stamatopoulou +1
The effect of nonlocality on the optical response of metals lies at the forefront of research in nanoscale physics and, in particular, quantum plasmonics. In alkali metals, nonloca…
Self-hybridisation between interband transitions and Mie modes in dielectric nanoparticles
Christos Tserkezis, P. Elli Stamatopoulou, Christian Wolff +1
We discuss the possibility of self-hybridisation in high-index dielectric nanoparticles, where Mie modes of electric or magnetic type can couple to the interband transitions of the…
A Dedicated Modelling Scheme for Nonclassical Optical Response from the Nanosphere-on-Mirror Structure
Xiaotian Yan, Christos Tserkezis, N. Asger Mortensen +2
Within the framework of the T-matrix method, we present a modeling tool that predicts the optical response from the Nanosphere-on-Mirror (NSoM) construct. The nonclassical effects…
Electron beams traversing spherical nanoparticles: analytic and numerical treatment
P. Elli Stamatopoulou, Wenhua Zhao, Álvaro Rodríguez Echarri +4
We present an analytic, Mie theory-based solution for the energy-loss and the photon-emission probabilities in the interaction of spherical nanoparticles with electrons passing nea…
The Uniqueness Theorem for Nonlocal Hydrodynamic Media
Christos Mystilidis, George Fikioris, Christos Tserkezis +2
We investigate a fundamental electromagnetic theorem, namely the uniqueness theorem, in the context of nonlocal electromagnetics, as simulated by a popular semiclassical model, the…
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…
Reconfigurable chirality with achiral excitonic materials in the strong-coupling regime
P. Elli Stamatopoulou, Sotiris Droulias, Guillermo P. Acuna +2
We introduce and theoretically analyze the concept of manipulating optical chirality via strong coupling of the optical modes of chiral nanostructures with excitonic transitions in…
Gain-compensated cavities for the dynamic control of light-matter interactions
Christos Tserkezis, Christian Wolff, Fedor A. Shuklin +4
We propose an efficient approach for actively controlling the Rabi oscillations in emitter-cavity hybrids based on the presence of an element with optical gain. Inspired by recent…
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…