382 citations · 2.6k across the 53 of their papers we have counts for
56 papers
First-principles electron-phonon scattering in real-time TDDFT
Zhengwei Nie, Subhojit Pal, Marti Lüders +4
Real-time time-dependent density functional theory provides a first-principles description of coherent electron dynamics in laser-driven solids, but its unitary formulation cannot…
First-principles Floquet analysis from real-time propagation
Ruipeng Li, Benshu Fan, Umberto De Giovannini +2
We present a real-time Floquet analysis method for extracting quasi-energies and Floquet states directly from propagated wavefunctions. By reconstructing the one-period evolution o…
Symmetry-Driven Floquet Engineering in Multivalley SnS
Sotirios Fragkos, Benshu Fan, Umberto De Giovannini +5
Coherent interactions between time-periodic electromagnetic fields and materials offer a powerful platform for engineering light-matter hybrid Floquet states with tailored function…
Cavity-QED-controlled two-dimensional Moiré Excitons without twisting
Francesco Troisi, Hannes Hübener, Angel Rubio +1
We propose an all-optical Moiré-like exciton confinement by means of spatially periodic optical cavities. Such periodic photonic structures can control the material properties by c…
Polarized Houston State Framework for Nonequilibrium Driven Open Quantum Systems
Shunsuke A. Sato, Hannes Hübener, Umberto De Giovannini +1
We introduce a new theoretical framework -- the polarized Houston basis -- to model nonequilibrium dynamics in driven open quantum systems, formulated for use within the quantum ma…
Cavity-Mediated Electron-Electron Interactions: Renormalizing Dirac States in Graphene
Hang Liu, Francesco Troisi, Hannes Hübener +2
Embedding materials in optical cavities has emerged as a strategy for tuning material properties. Accurate simulations of electrons in materials interacting with quantum photon flu…
The 2025 Roadmap to Ultrafast Dynamics: Frontiers of Theoretical and Computational Modelling
Fabio Caruso, Michael A. Sentef, Claudio Attaccalite +27
The exploration of ultrafast phenomena is a frontier of condensed matter research, where the interplay of theory, computation, and experiment is unveiling new opportunities for und…
Floquet optical selection rules in black phosphorus
Benshu Fan, Umberto De Giovannini, Hannes Hübener +4
Optical selection rules endorsed by symmetry are crucial for understanding the optical properties of quantum materials and the associated ultrafast spectral phenomena. Here, we int…
Attosecond All-Optical Retrieval of Valley Polarization via Circular Dichroism in Transient Absorption
Wenqing Li, Xiaosong Zhu, Pengfei Lan +5
We propose a scheme for retrieving the ultrafast valley polarization (VP) dynamics in two-dimensional hexagonal materials via attosecond circular dichroism (CD) transient absorptio…
Light-induced renormalization of the band structure of chiral tellurium
G. Gatti, N. Tancogne-Dejean, H. Hübener +11
Chirality in tellurium derives from a Peierls distortion driven by strong electron-phonon coupling, making this material a unique candidate for observing a light-induced topologica…
Efficient time dependent Wannier functions for ultrafast dynamics
Cristian M. Le, Hannes Hübener, Ofer Neufeld +1
Time-dependent Wannier functions were initially proposed as a means for calculating the polarization current in crystals driven by external fields. In this work, we present a simpl…
Direct observation of Floquet-Bloch states in monolayer graphene
Dongsung Choi, Masataka Mogi, Umberto De Giovannini +6
Floquet engineering is a novel method of manipulating quantum phases of matter via periodic driving [1, 2]. It has successfully been utilized in different platforms ranging from ph…
Cavity engineered phonon-mediated superconductivity in MgB from first principles quantum electrodynamics
I-Te Lu, Dongbin Shin, Mark Kamper Svendsen +5
Strong laser pulses can control superconductivity, inducing non-equilibrium transient pairing by leveraging strong-light matter interaction. Here we demonstrate theoretically that…
Band nonlinearity-enabled manipulation of Dirac nodes, Weyl cones, and valleytronics with intense linearly polarized light
Ofer Neufeld, Hannes Hübener, Gregor Jotzu +2
We study low-frequency linearly-polarized laser-dressing in materials with valley (graphene and hexagonal-Boron-Nitride), and topological (Dirac- and Weyl-semimetals), properties.…
Are there universal signatures of topological phases in high harmonic generation? Probably not
Ofer Neufeld, Nicolas Tancogne-Dejean, Hannes Hübener +2
High harmonic generation (HHG) has developed in recent years as a promising tool for ultrafast materials spectroscopy. At the forefront of these advancements, several works propose…
Mapping light-dressed Floquet bands by highly nonlinear optical excitations and valley polarization
Anna Galler, Angel Rubio, Ofer Neufeld
Ultrafast nonlinear optical phenomena in solids have been attracting major interest as novel methodologies for femtosecond spectroscopy of electron dynamics and control of material…
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…
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…
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…
First-principles modelling for time-resolved ARPES under different pump-probe conditions
Umberto De Giovannini, Shunsuke A. Sato, Hannes Hübener +1
First-principles methods for time-resolved angular resolved photoelectron spectroscopy play a pivotal role in providing interpretation and microscopic understanding of the complex…
Excited-state band structure mapping
M. Puppin, C. W. Nicholson, C. Monney +10
Angle-resolved photoelectron spectroscopy is an extremely powerful probe of materials to access the occupied electronic structure with energy and momentum resolution. However, it r…