250 citations · 1.1k across the 47 of their papers we have counts for
28 papers · 1 filter
High-order correlations and ultrafast Wigner negativities in bright-squeezed-vacuum-driven high-harmonic generation
Sebastián de-la-Peña, Heiko Appel, Marcelo F. Ciappina +2
High-harmonic generation (HHG) is a prototypical strong-field process in which intense light drives matter to emit radiation at integer multiples of the driving frequency. Extendin…
Multidimensional attosecond clocking near Dirac cones in graphite
Daniel Kroeger, Anna Hassine, Eyal Uzner +5
Two-color high-harmonic spectroscopy is widely used to access sub-cycle electron dynamics and to retrieve harmonic timing information, including harmonic phases and attochirp acros…
Ultrafast spectroscopy and role of interlayer coupling in high harmonic generation from layered solids
Eyal Uzner, Ofer Neufeld
High harmonic generation (HHG) in solids has recently emerged as a powerful all-optical approach for probing material properties and ultrafast electron dynamics in quantum systems.…
Role of ultrafast electron-optical-phonon interactions in high harmonic generation from graphene
Adam Herling, Ofer Neufeld
High harmonic generation (HHG) is a widely explored process in solids, where intense lasers drive attosecond-to-femtosecond electron dynamics within bands, causing high-energy emis…
Pulse-duration-sensitive high harmonics and attosecond locally-chiral light from a chiral topological Weyl semimetal
Alba de las Heras, Ofer Neufeld, Angel Rubio
High harmonic generation (HHG) in solids results from an interplay between intraband acceleration and electron-hole recombination driven by a high-intensity laser pulse. Here, we t…
Ab-initio study of high harmonic generation from fullerenes: Multi-orbital effects, correlations, and size dependence
Km Akanksha Dubey, Ofer Neufeld
We study with ab-initio theory high harmonic generation (HHG) from a series of gas-phase fullerenes (from C to C, including isomers) under varying laser conditions (l…
In-plane optically tunable magnetic states in 2D materials via tailored femtosecond laser driving
Shuang Liu, Oren Cohen, Peng Chen +1
It is well established that light can control magnetism in matter, e.g. via the inverse Faraday effect or ultrafast demagnetization. However, such control is typically limited to m…
Photoelectron chiral dichroism induced by lasers without helicity via chiral hole wave-packets
Gal Bouskila, Avner Fleischer, Ofer Neufeld
Photoelectron circular dichroism (PECD) is a method where randomly oriented chiral molecules are photoionized due to irradiation by circularly-polarized lasers, yielding large chir…
Laser Driven Bulk-to-Layered Phase Transition
Shuang Liu, Oren Cohen, Ofer Neufeld +1
Laser-induced phase transitions offer pathways of phase transitions that are inaccessible by conventional stimuli. In this study, we conduct ab initio simulations to numerically de…
Probing broken time-reversal symmetry with tailored-light photocurrents
Daniel M. B. Lesko, Tobias Weitz, Simon Wittigschlager +4
Light-field-driven photocurrents represent a powerful tool for generating photocurrents without external bias in light-matter systems that lack inversion symmetry. While these phot…
Linearly-polarized few-cycle pulses drive carrier envelope phase-sensitive coherent magnetization injection
Ofer Neufeld
Circularly-polarized light is well-known to induce, or flip the direction of, magnetization in solids. At its heart, this arises from time-reversal symmetry breaking by the vector…
Two-color harmonic spectroscopy of ultrafast Dirac electron dynamics
Zhaopin Chen, Camilo Granados, Eyal Uzner +5
High-harmonic generation (HHG), the hallmark effect of attosecond science, is a nonperturbative nonlinear process leading to the emission of high-harmonic light from gases and soli…
Light's symmetry, asymmetry, and their role in nonlinear optics and ultrafast phenomena
Ofer Neufeld, Matan Even Tzur, Ofer Kfir +2
The analysis of symmetries is extremely useful across science. In Physics, symmetries are used to derive conservation laws and selection rules for transitions in interacting system…
Quantum interference and occupation control in high harmonic generation from monolayer
Minjeong Kim, Taeho Kim, Anna Galler +13
Two-dimensional hexagonal materials such as transition metal dichalcogenides exhibit valley degrees of freedom, offering fascinating potential for valley-based quantum computing an…
Quantum electrodynamics in high harmonic generation: multi-trajectory Ehrenfest and exact quantum analysis
Sebastián de-la-Peña, Ofer Neufeld, Matan Even Tzur +3
High-harmonic generation (HHG) is a nonlinear process in which a material sample is irradiated by intense laser pulses, causing the emission of high harmonics of the incident light…
Optical control of electrons in a Floquet topological insulator
Daniel M. B. Lesko, Tobias Weitz, Simon Wittigschlager +4
Light-dressed materials hold enormous potential for generating new electronic properties. The band structure resulting from light-dressing can exhibit starkly different quantum and…
The Application of Tailored Fields for Studying Chirality and Symmetry
Dino Habibović, Kathryn R. Hamilton, Ofer Neufeld +1
Ultrashort laser pulses pose unique tools to trigger and probe the fastest charge dynamics in matter, allowing the investigation of fundamental physical phenomena with unprecedente…
New photonic conservation laws in parametric nonlinear optics
Gavriel Lerner, Matan Even Tzur, Ofer Neufeld +2
Conservation laws are one of the most generic and useful concepts in physics. In nonlinear optical parametric processes, conservation of photonic energy, momenta and parity often l…
Tunable Tesla-scale magnetic attosecond pulses through ring-current gating
Alba de las Heras, Franco P. Bonafé, Carlos Hernández-García +2
Coherent control over electron dynamics in atoms and molecules using high-intensity circularly-polarized laser pulses gives rise to current loops, resulting in the emission of magn…
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…
High-harmonic generation in liquids with few-cycle pulses: effect of laser-pulse duration on the cut-off energy
Angana Mondal, Benedikt Waser, Tadas Balciunas +5
High-harmonic generation (HHG) in liquids is opening new opportunities for attosecond light sources and attosecond time-resolved studies of dynamics in the liquid phase. In gas-pha…
Unambiguous definition of handedness for locally-chiral light
Ofer Neufeld, Oren Cohen
Synthetic chiral light fields were recently introduced as a novel source of chirality [Ayuso et al. Nat. Phot. 13, 866 (2019)]. This locally-chiral light spans a three-dimensional…
Multi-scale dynamical symmetries and selection rules in nonlinear optics
Gavriel Lerner, Ofer Neufeld, Liran Hareli +6
Symmetries and their associated selection rules are extremely useful in all fields of science. In particular, for system that include electromagnetic (EM) fields interacting with m…
Selection rules in symmetry-broken systems by symmetries in synthetic dimensions
Matan Even Tzur, Ofer Neufeld, Avner Fleischer +1
Selection rules are often considered a hallmark of symmetry. When a symmetry is broken, e.g., by an external perturbation, the system exhibits selection rule deviations which are o…