Anomalous temperature dependence of high-harmonic generation in Mott insulators
We reveal the crucial effect of strong spin-charge coupling on high-harmonic generation
(HHG) in Mott insulators. In a system with antiferromagnetic correlations, the HHG signal is …
(HHG) in Mott insulators. In a system with antiferromagnetic correlations, the HHG signal is …
High harmonic generation in a correlated electron system
High harmonic generation in crystalline solids has been examined so far on the basis of one-
body energy-band structures arising from electron itineracy in a periodic potential. Here, we …
body energy-band structures arising from electron itineracy in a periodic potential. Here, we …
Systematic generation of the cascade of anomalous dynamical first-and higher-order modes in Floquet topological insulators
After extensive investigation of the Floquet second-order topological insulator (FSOTI) in two
dimensions, here we propose two driving schemes to systematically engineer the hierarchy …
dimensions, here we propose two driving schemes to systematically engineer the hierarchy …
Dynamical construction of quadrupolar and octupolar topological superconductors
We propose a three-step periodic drive protocol to engineer two-dimensional (2D) Floquet
quadrupole superconductors and three-dimensional (3D) Floquet octupole superconductors …
quadrupole superconductors and three-dimensional (3D) Floquet octupole superconductors …
High-harmonic generation in Su-Schrieffer-Heeger chains
Su-Schrieffer-Heeger (SSH) chains are the simplest model systems that display topological
edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an …
edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an …
High-order nonlinear optical response of a twisted bilayer graphene
TN Ikeda - Physical Review Research, 2020 - APS
Focusing on the twist angle for the minimal commensurate structure, we perform
nonperturbative calculations of electron dynamics in the twisted bilayer graphene (TBG) …
nonperturbative calculations of electron dynamics in the twisted bilayer graphene (TBG) …
Do** and gap size dependence of high-harmonic generation in graphene: Importance of consistent formulation of light-matter coupling
High-harmonic generation (HHG) in solids is a fundamental nonlinear phenomenon, which
can be efficiently controlled by modifying system parameters such as do** level and …
can be efficiently controlled by modifying system parameters such as do** level and …
Floquet-Landau-Zener interferometry: Usefulness of the Floquet theory in pulse-laser-driven systems
We develop the Landau-Zener transfer matrix theory for the instantaneous Floquet states
(IFSs) for quantum systems driven by a strong pulse laser. Applying this theory to the pulse …
(IFSs) for quantum systems driven by a strong pulse laser. Applying this theory to the pulse …
Map** light-dressed Floquet bands by highly nonlinear optical excitations and valley polarization
Ultrafast nonlinear optical phenomena in solids have been attracting a great deal of interest
as novel methodologies for the femtosecond spectroscopy of electron dynamics and control …
as novel methodologies for the femtosecond spectroscopy of electron dynamics and control …
High-harmonic generation in quantum spin systems
We theoretically study the high-harmonic generation (HHG) in one-dimensional spin
systems. While in electronic systems the driving by ac electric fields produces radiation from …
systems. While in electronic systems the driving by ac electric fields produces radiation from …