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Updated: Jul 12, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Circular dichroism in Floquet Chern insulator via high-order harmonics spectroscopy
Jeail Kim1,2, Dasol Kim1,2, Dong Eon Kim1,2
1Department of Physics and Center for Attosecond Science and Technology, POSTECH, 77, Pohang 37673, Republic of Korea.
Abstract:
High-order harmonics (HOHs) spectroscopy is attracting the attention of the condensed matter community, mostly because the HOHs spectrum encode the material property. Topological materials are of interest for both basic research and advanced technologies because of their robust properties against dissipation and perturbations. Floquet engineering technique have been demonstrated to be a unique tool to manipulate topological phase. In this paper, we apply HOH spectroscopy to characterize the Floquet state via the circular dichroism (CD). We find that the CD of the co-rotating harmonics is sensitive to Floquet topological states.
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