Dephasing of Strong-Field-Driven Floquet States Revealed by Time- and Spectrum-Resolved Quantum-Path Interferometry

Autor: Liu, Yaxin, Zhu, Bingbing, Jiang, Shicheng, Huang, Shenyang, Luo, Mingyan, Zhang, Sheng, Yan, Hugen, Zhang, Yuanbo, Lu, Ruifeng, Tao, Zhensheng
Rok vydání: 2023
Předmět:
Druh dokumentu: Working Paper
Popis: 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.
Databáze: arXiv