Dephasing of Strong-Field-Driven Floquet States Revealed by Time- and Spectrum-Resolved Quantum-Path Interferometry
Optics
2025-03-17 v2 Mesoscale and Nanoscale Physics
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.
Keywords
Cite
@article{arxiv.2311.10286,
title = {Dephasing of Strong-Field-Driven Floquet States Revealed by Time- and Spectrum-Resolved Quantum-Path Interferometry},
author = {Yaxin Liu and Bingbing Zhu and Shicheng Jiang and Shenyang Huang and Mingyan Luo and Sheng Zhang and Hugen Yan and Yuanbo Zhang and Ruifeng Lu and Zhensheng Tao},
journal= {arXiv preprint arXiv:2311.10286},
year = {2025}
}