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High-harmonic spectroscopy of strongly bound excitons in solids
Simon Vendelbo Bylling Jensen, Lars Bojer Madsen, Angel Rubio +1
We explore the nonlinear response of ultrafast strong-field driven excitons in a one-dimensional solid with ab initio simulations. We demonstrate from our simulations and analytica…
Enhancement of high-order harmonic generation in graphene by mid-infrared and terahertz fields
Wenwen Mao, Angel Rubio, Shunsuke A. Sato
We theoretically investigate high-order harmonic generation (HHG) in graphene under mid-infrared (MIR) and terahertz (THz) fields based on a quantum master equation. Numerical simu…
Revealing Ultrafast Phonon Mediated Inter-Valley Scattering through Transient Absorption and High Harmonic Spectroscopies
Kevin Lively, Shunsuke A. Sato, Guillermo Albareda +2
Processes involving ultrafast laser driven electron-phonon dynamics play a fundamental role in the response of quantum systems in a growing number of situations of interest, as evi…
Non-linear optics at twist interfaces in h-BN/SiC heterostructures
Abhijit Biswas, Rui Xu, Gustavo A. Alvarez +24
Understanding the emergent electronic structure in twisted atomically thin layers has led to the exciting field of twistronics. However, practical applications of such systems are…
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…