DOE OSTI · 3029513
Terahertz 2D coherent spectroscopy for probing and controlling multicorrelations in quantum matter
Abstract
Terahertz 2D coherent spectroscopy (THz-2DCS) is an emerging technique that brings multidimensional resolution to the ultrafast spectral–temporal dynamics of non-equilibrium quantum phases of matter, enabling new capabilities for precise coherent control in many-body dynamics and multiorder correlations. Here, by mapping and disentangling complex excitation and detection pathways across distinct time and frequency dimensions, THz-2DCS provides a form of coherence tomography of light-induced quantum matter — revealing multiquantum coherences, separating nonlinear response functions and capturing collective modes and quantum kinetics on ultrafast THz timescales. This Perspective discusses the technical capabilities of THz-2DCS, provides a comparison to other multidimensional and coherent transient spectroscopies and looks ahead towards opportunities for advancing THz-2DCS instrumentation and experimental strategies towards new frontier discoveries.
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Huang, Chuankun [Ames Laboratory (AMES), Ames, IA (United States); Iowa State University, Ames, IA (United States)] (ORCID:0000000152511417), Mootz, Martin [Ames Laboratory (AMES), Ames, IA (United States)] (ORCID:0000000320403598), Luo, Liang [Ames Laboratory (AMES), Ames, IA (United States)] (ORCID:0000000260790214), Perakis, Ilias E. [University of Alabama, Birmingham, AL (United States)], Wang, Jigang [Ames Laboratory (AMES), Ames, IA (United States); Iowa State University, Ames, IA (United States)] (ORCID:0000000261594119). 2026-02-06. Terahertz 2D coherent spectroscopy for probing and controlling multicorrelations in quantum matter. https://doi.org/10.1038/s42254-025-00917-2
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