177 citations · 1.3k across the 52 of their papers we have counts for
57 papers
Nonlinear quantum noise polarization in macroscopic nonlinear QED
Arman Kashef, Stefan Scheel, Marco Ornigotti
We construct a quantum theory of light in nonlinearly responding materials with dispersion and absorption and, in particular, show the emergence of non-Gaussian noise associated wi…
Spatial Engineering of Topological Quantum Matter with Structured Light
Matias Mustonen, Ali G. Moghaddam, Teemu Ojanen +1
Structured light provides a powerful means of controlling matter while itself exhibiting nontrivial spatial topology. Here, we show that these spatial structures can be harnessed t…
Path integral quantization of the electromagnetic field in nonlinear dielectric materials
Arman Kashef, Oscar Perearnau Herrero, Alexander Szameit +2
We construct a quantum theory of light in nonlinear dielectric media with dispersion and absorption. We employ a mesoscopic model for the light-matter interaction that include a fo…
Nonlinear Quantum Electrodynamics of Epsilon-Near-Zero Nanocavities
Luca Dal Negro, Riccardo Franchi, Marco Ornigotti
We investigate single-photon nonlinear refractive index change and frequency shift of Epsilon-Near-Zero (ENZ) sub-wavelength nanocavities. We apply the rigorous quantum Langevin-no…
Field theory description of the non-perturbative optical nonlinearity of epsilon-near-zero media
Yaraslau Tamashevich, Tornike Shubitidze, Luca Dal Negro +1
In this paper we introduce a fully non-perturbative approach for the description of the optical nonlinearity of epsilon-near-zero (ENZ) media. In particular, based on the rigorous…
Time-varying media, relativity, and the arrow of time
Matias Koivurova, Charles W. Robson, Marco Ornigotti
We study the implications of time-varying wave mechanics, and show how the standard wave equation is modified if the speed of a wave is not constant in time. In particular, waves w…
2D Weyl Materials in the Presence of Constant Magnetic Fields
Yaraslau Tamashevich, Leone Di Mauro Villari, Marco Ornigotti
In this work we investigate the effect of a constant external, or artificial, magnetic field on the nonlinear response of 2D Weyl materials. We calculate the Landau Levels for tilt…
Epsilon-near-zero nanoparticles
Ibrahim Issah, Jesse Pietila, Tommi Kujala +3
In this work, we propose epsilon-near-zero (ENZ) nanoparticles formed of metal and dielectric bilayers and employ the effective medium approach for multilayered nanospheres to stud…
Inhomogeneous Dirac-Bloch Equations for Graphene Interacting with Structured Light
Yaraslau Tamashevich, Marco Ornigotti
We generalise the usual framework of Dirac-Bloch equations, used to compute the nonlinear optical response of 2D materials excited by spatially uniform optical pulses, to the case…
Observation of the quantum Gouy phase
Markus Hiekkamäki, Rafael F. Barros, Marco Ornigotti +1
Controlling the evolution of a photonic quantum states is crucial for most quantum information processing and metrology tasks. Because of its importance, many mechanisms of quantum…
Rewinding the Void: How One Solution of Einstein's Field Equations Describes Both the Birth of a Universe and the End of Time
Charles W. Robson, Marco Ornigotti
The type D Kasner vacuum solution of general relativity is reviewed, highlighting the little-known, intriguing property that it can describe both an anisotropic cosmology and the s…
Harmonic generation in bent graphene with artificially-enhanced spin-orbit coupling
Arttu Nieminen, Marco Ornigotti
We theoretically investigate the nonlinear response of bent graphene, in the presence of artificially-enhanced spin-orbit coupling, which can occur either via adatom deposition, or…
Turbulence-resistant self-focusing vortex beams
Meilan Luo, Matias Koivurova, Marco Ornigotti +1
We consider recently introduced self-focusing fields that carry orbital angular momentum (OAM) [Opt. Lett. , 23842387 (2021)] and in particular, their propagation p…
Take the A-Metric: Interpretations of Some Known Solutions of Einstein's Vacuum Field Equations
Charles W. Robson, Marco Ornigotti
In this work, we present a new interpretation of the only static vacuum solution of Einstein's field equations with planar symmetry, the Taub solution. This solution is a member of…
Nonlinear optical response of Type-II Weyl fermions in two dimensions
Yaraslau Tamashevich, Leone Di Mauro Villari, Marco Ornigotti
We present a theoretical model to study the nonlinear optical response of materials with a low-energy spectrum characterised by strongly tilted, type-II, Weyl cones in two dimensio…
Path Integrals: From Quantum Mechanics to Photonics
Charles W. Robson, Yaraslau Tamashevich, Tapio T. Rantala +1
The path integral formulation of quantum mechanics, i.e., the idea that the evolution of a quantum system is determined as a sum over all the possible trajectories that would take…
Generation of Half-Integer Harmonics and Efficient THz-to-Visible Frequency Conversion in Strained Graphene
Marco Ornigotti, Luca Ornigotti, Fabio Biancalana
We study the generation of harmonics from graphene under the influence of an artificial magnetic field, generated via bending of a graphene flake. We show how the Landau level stru…
High-accuracy longitudinal position measurement using self-accelerating light
Shashi Prabhakar, Stephen Plachta, Marco Ornigotti +1
Radially self-accelerating light exhibits an intensity pattern that describes a spiraling trajectory around the optical axis as the beam propagates. In this article, we show in sim…
Localized waves carrying orbital angular momentum in optical fibers
Paula Nuño Ruano, Charles W. Robson, Marco Ornigotti
We consider the effect of orbital angular momentum (OAM) on localized waves in optical fibers using theory and numerical simulations, focusing on splash pulses and focus wave modes…
Interacting ring-Airy beams in nonlinear media
Charles W. Robson, Marco Ornigotti
The interactions between copropagating ring-Airy beams in a (2+1)-dimensional Kerr medium are numerically investigated for the first time. It is shown that two overlapping ring-Air…
Metamaterials designed for enhanced ENZ properties]{Metamaterials designed for enhanced ENZ properties
Matias Koivurova, Tommi Hakala, Jari Turunen +3
We examine layered metamaterial structures consisting of alternating films of epsilon-near-zero (ENZ) and dielectric material, and show that for such a stack it is possible to enha…
Transient perturbative nonlinear responses of plasmonic materials
Mikko J. Huttunen, Jussi Kelavuori, Marco Ornigotti
Recent investigations on optical nonlinearities of plasmonic materials suggest their responses may be even beyond the usual perturbative description. To better understand these sur…
Spectral Index of OAM-Carrying Ultrafast Localized Pulses
Souvik Agasti, Marco Ornigotti
We investigate the spectral degree of freedom of OAM-carrying localized waves, and its influence on their transverse intensity distribution. In particular, we focus our attention o…
Goos-Hänchen and Imbert-Fedorov Shifts for Epsilon-Near-Zero Materials
Arttu Nieminen, Andrea marini, Marco Ornigotti
We investigate the reflection of a Gaussian beam impinging upon the surface of an epsilon-near-zero (ENZ) medium. In particular, we discuss the occurrence of Goos-Hänchen and Imber…