Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Ornigotti, Marco"'
In this work we present a numerical framework for studying the interaction of structured electromagnetic fields, i.e., light pulses carrying orbital angular momentum (OAM), interacting with a single layer of graphene. Our approach is based on a two-s
Externí odkaz:
http://arxiv.org/abs/2410.12073
The study of fundamental optics effects has been stimulated through the increasing ability to structure light in all its degrees of freedom (DOFs) in sophisticated but simple experimental settings. However, with such an increase in experimental capab
Externí odkaz:
http://arxiv.org/abs/2406.06750
When reflected from an interface, a laser beam generally drifts and tilts away from the path predicted by ray optics, an intriguing consequence of its finite transverse extent. Such beam shifts manifest more dramatically for structured light fields,
Externí odkaz:
http://arxiv.org/abs/2309.14083
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 Feynman path integral method, we develop a dressed Lagrangian field th
Externí odkaz:
http://arxiv.org/abs/2308.03181
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 which experience longitudinal acceleration are shown to have clear rela
Externí odkaz:
http://arxiv.org/abs/2304.08108
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 tilted cones in 2D Weyl materials by treating the tilting in a perturbativ
Externí odkaz:
http://arxiv.org/abs/2209.04295
Autor:
Issah, Ibrahim, Pietila, Jesse, Kujala, Tommi, Koivurova, Matias, Caglayan, Humeyra, Ornigotti, Marco
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 study their optical response. We obtained a passive tunable ENZ region by
Externí odkaz:
http://arxiv.org/abs/2208.05299
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 of structured light pulses. We derive the general form of Dirac-Bloch
Externí odkaz:
http://arxiv.org/abs/2207.02508
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 state evolution have been tested in detail and are well understood. H
Externí odkaz:
http://arxiv.org/abs/2206.01973
Autor:
Robson, Charles W., Ornigotti, Marco
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 spacetime deep within a black hole, these two descriptions linked by a
Externí odkaz:
http://arxiv.org/abs/2205.07768