293 citations · 618 across the 12 of their papers we have counts for
12 papers
Cloaked near-field probe for non-invasive near-field optical microscopy
Felipe Bernal Arango, Filippo Alpeggiani, Donato Conteduca +7
Near-field scanning optical microscopy is a powerful technique for imaging below the diffraction limit, which has been extensively used in bio-medical imaging and nanophotonics. Ho…
Direct Observation of Topological Edge States in Silicon Photonic Crystals: Spin, Dispersion, and Chiral Routing
Nikhil Parappurath, Filippo Alpeggiani, L. Kuipers +1
Topological protection in photonics offers new prospects for guiding and manipulating classical and quantum information. The mechanism of spin-orbit coupling promises the emergence…
Topological Edge States in Bichromatic Photonic Crystals
F. Alpeggiani, L. Kuipers
Bichromatic photonic crystal structures are based on the coexistence of two different periodicities in the dielectric constant profile. They are realized starting from a photonic c…
Spatial bunching of same-charge polarization singularities in two-dimensional random vector waves
L. De Angelis, F. Alpeggiani, L. Kuipers
Topological singularities are ubiquitous in many areas of physics. Polarization singularities are locations at which an aspect of the polarization ellipse of light becomes undeterm…
Persistence and Lifelong Fidelity of Phase Singularities in Optical Random Waves
L. De Angelis, F. Alpeggiani, A. Di Falco +1
Phase singularities are locations where light is twisted like a corkscrew, with positive or negative topological charge depending on the twisting direction. Among the multitude of…
Spatial Distribution of Phase Singularities in Optical Random Vector Waves
L. De Angelis, F. Alpeggiani, A. Di Falco +1
Phase singularities are dislocations widely studied in optical fields as well as in other areas of physics. With experiment and theory we show that the vectorial nature of light af…
Angular momenta, helicity, and other properties of dielectric-fiber and metallic-wire modes
M. F. Picardi, K. Y. Bliokh, F. J. Rodríguez-Fortuño +2
Spin and orbital angular momenta (AM) of light are well studied for free-space electromagnetic fields, even nonparaxial. One of the important applications of these concepts is the…
Electromagnetic helicity in complex media
F. Alpeggiani, K. Y. Bliokh, F. Nori +1
Optical helicity density is usually discussed for monochromatic electromagnetic fields in free space. It plays an important role in the interaction with chiral molecules or nanopar…
Nanoscale chiral valley-photon interface through optical spin-orbit coupling
Su-Hyun Gong, Filippo Alpeggiani, Beniamino Sciacca +2
The emergence of two-dimensional transition metal chalcogenide materials has sparked an intense activity in valleytronics since their valley information can be directly encoded and…
Realization of high-Q/V bichromatic photonic crystal cavities defined by an effective Aubry-André-Harper potential
A. Simbula, M. Schatzl, L. Zagaglia +6
We report on the design, fabrication and optical characterization of bichromatic photonic crystal cavities in thin silicon membranes, with resonances around 1550 nm wavelength. The…
Visible quantum plasmonics from metallic nanodimers
Filippo Alpeggiani, Stefania D'Agostino, Daniele Sanvitto +1
We report theoretical evidence that bulk nonlinear materials weakly interacting with highly localized plasmonic modes in ultra-sub-wavelength metallic nanostructures can lead to no…
Josephson surface plasmons in spatially confined cuprate superconductors
Filippo Alpeggiani, Lucio Claudio Andreani
In this work, we generalize the theory of localized surface plasmons to the case of high-Tc cuprate superconductors, spatially confined in the form of small spherical particles. At…