@inproceedings{b825cc50a9d748859c9461bb15801679,
title = "Triple-quantum dual-comb two-dimensional coherent spectroscopy resolves velocity-synchronized Dicke states in hot atomic vapors",
abstract = "Two-dimensional coherent spectroscopy (2DCS) combined with dual-comb technology offers unprecedented resolution for probing many-body interactions in atomic vapors, yet its application to high-order multi-quantum transitions remains challenging due to weaker nonlinear signals and phase instability. Here, we demonstrate a triple-quantum dual-comb 2DCS technique that achieves λ/110 phase stability through digital correction, enabling the observation of velocity-synchronized Dicke states in a thermal rubidium vapor. By resolving collective hyperfine resonances of 85Rb and 87Rb isotopes with 100 MHz spectral resolution, the titled and elongated ellipticity of the three-quantum peak line shape (0.94) is higher than that of the double-quantum (0.84), reveals that triple-quantum (TQS) correlations (0.95) surpass double-quantum counterparts (0.90), indicating tighter velocity matching in higher-order Dicke states. This work provides a pathway for manipulating multi-atom correlations in Doppler-broadened systems, and greatly assists to characterize complex hyperfine many-body interaction in semiconductor exciton and two-dimensional materials.",
keywords = "Dicke states, Dual-comb spectroscopy, Many-body Dipole-dipole interactions, Rubidium vapors, Two-dimensional coherent spectroscopy",
author = "Zejiang Deng and Zilin Zhao and Wenxue Li and Chenglin Gu and Daping Luo and Liyuan Hou and Zhong Zuo and Jiayi Pan",
note = "Publisher Copyright: {\textcopyright} 2026 Published by SPIE.; 4th Quantum Sensing, Imaging, and Precision Metrology ; Conference date: 17-01-2026 Through 23-01-2026",
year = "2026",
month = mar,
day = "5",
doi = "10.1117/12.3076615",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Shahriar, \{Selim M.\}",
booktitle = "Quantum Sensing, Imaging, and Precision Metrology IV",
address = "美国",
}