Dephasing of Strong-Field-Driven Floquet States Revealed by Time- and Spectrum-Resolved Quantum-Path Interferometry
arXiv:2311.10286 · doi:10.1103/PhysRevLett.133.026901
Abstract
Floquet engineering, while a powerful tool for ultrafast quantum-state manipulation, faces challenges under strong-field conditions, as recent high harmonic generation studies unveil exceptionally short dephasing times. In this study, using time- and spectrum-resolved quantum-path interferometry, we investigate the dephasing mechanisms of terahertz-driven excitons. Our results reveal a dramatic increase in exciton dephasing rate beyond a threshold field strength, indicating exciton dissociation as the primary dephasing mechanism. Importantly, we demonstrate long dephasing times of strong-field-dressed excitons, supporting coherent strong-field manipulation of quantum materials.
References in corpus (13)
- Photovoltaic Hall effect in graphene
- Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 Monolayers
- Attosecond dynamics through a Fano resonance: Monitoring the birth of a photoelectron
- Colors Of Graphite On Silicon Dioxide
- Pseudospin-selective Floquet band engineering in black phosphorus
- Dissipative Floquet Topological Systems
- Energy-dependent photoemission delays from noble metal surfaces by attosecond interferometry
- Giant modulation of optical nonlinearity by Floquet engineering
- Floquet engineering of strongly-driven excitons in monolayer tungsten disulfide
- Phase-locked multi-terahertz electric fields exceeding 13 MV/cm at 190 kHz repetition rate
- Field-induced dissociation of two-dimensional excitons in transition-metal dichalcogenides
- Sub-Cycle Optical Response Caused by Dressed State with Phase-Locked Wavefunctions
- An explicit formula for high-order sideband polarization by extreme tailoring of Feynman path integrals