382 citations · 2.2k across the 46 of their papers we have counts for
8 papers · 1 filter
A time-based Chern number in periodically-driven systems in the adiabatic limit
I-Te Lu, Dongbin Shin, Umberto De Giovannini +4
To define the topology of driven systems, recent works have proposed synthetic dimensions as a way to uncover the underlying parameter space of topological invariants. Using time a…
Eliminating artificial boundary conditions in time-dependent density functional theory using Fourier contour deformation
Jason Kaye, Alex Barnett, Leslie Greengard +2
We present an efficient method for propagating the time-dependent Kohn-Sham equations in free space, based on the recently introduced Fourier contour deformation (FCD) approach. Fo…
Attosecond magnetization dynamics in non-magnetic materials driven by intense femtosecond lasers
Ofer Neufeld, Nicolas Tancogne-Dejean, Umberto De Giovannini +2
Irradiating solids with ultrashort laser pulses is known to initiate femtosecond timescale magnetization dynamics. However, sub-femtosecond spin dynamics have not yet been observed…
Infrared Plasmons Propagate through a Hyperbolic Nodal Metal
Yinming Shao, Aaron J. Sternbach, Brian S. Y. Kim +16
Metals are canonical plasmonic media at infrared and optical wavelengths, allowing one to guide and manipulate light at the nano-scale. A special form of optical waveguiding is aff…
Controlling Floquet states on ultrashort time scales
Matteo Lucchini, Fabio Medeghini, Yingxuan Wu +10
The advent of ultrafast laser science offers the unique opportunity to combine Floquet engineering with extreme time resolution, further pushing the optical control of matter into…
Time- and angle-resolved photoelectron spectroscopy of strong-field light-dressed solids: prevalence of the adiabatic band picture
Ofer Neufeld, Wenwen Mao, Hannes Hübener +4
In recent years, strong-field physics in condensed-matter was pioneered as a novel approach for controlling material properties through laser-dressing, as well as for ultrafast spe…
Probing phonon dynamics with multi-dimensional high harmonic carrier envelope phase spectroscopy
Ofer Neufeld, Jin Zhang, Umberto De Giovannini +2
We explore pump-probe high harmonic generation (HHG) from monolayer hexagonal-Boron-Nitride, where a terahertz pump excites coherent optical phonons that are subsequently probed by…
Floquet engineering the band structure of materials with optimal control theory
Alberto Castro, Umberto de Giovannini, Shusuke A. Sato +2
We demonstrate that the electronic structure of a material can be deformed into Floquet pseudo-bands with arbitrarily tailored shapes. We achieve this goal with a novel combination…