9 papers
Evolution of terahertz third harmonic response across rare-earth nickelate phase-diagram
Gulloo Lal Prajapati, Igor Ilyakov, Alexey Ponomaryov +8
High harmonic generation (HHG) is a sensitive probe for investigating electronic structures and dynamics of materials and a source for attosecond pulses. In particular, HHG with te…
Electrical tunability of terahertz nonlinearity in graphene
Sergey Kovalev, Hassan A. Hafez, Klaas-Jan Tielrooij +15
Graphene is conceivably the most nonlinear optoelectronic material. Its nonlinear optical coefficients in the terahertz (THz) frequency range surpass those of other materials by ma…
Plasmonic metamaterial time crystal
Tingwen Guo, Jules Sueiro, Gian Marcello Andolina +18
Periodically driven optical materials and metamaterials have recently emerged as a promising platform for realizing photonic time crystals (PTCs), which are systems whose optical p…
Generalized thermodynamic closure in ultrafast phonon dynamics
Sheng Qu, Jiyong Kim, Jaco J. Geuchies +9
Driven-dissipative dynamics underlie a wide range of nonequilibrium phenomena in quantum materials, yet reduced descriptions beyond the quasi-equilibrium picture remain difficult t…
Higher harmonics in Mott-Hubbard insulators as sensors
Abdelrahman Azab, Friedemann Queisser, Gulloo Lal Prajapati +2
Using strong-coupling time-dependent perturbation theory, we study the response of Mott and charge-transfer insulators to an oscillating electric field. We derive analytical expres…
Biological Crowding Annihilates Terahertz Transmission Nonlinearity in Aqueous Protein Solutions
Ellen M. Adams, Igor Ilyakov, Manthan Raj +6
Hydration water is vital for the stabilization of protein structure and function. The strong interaction of hydration water with the protein surface brings into question how dynami…