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Quantum Software Tools Programming

Light-induced Magnetization by Quantum Geometry

arXiv
Authors: Hiroki Yoshida, Takehito Yokoyama

Year

2026

Paper ID

3824

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

We propose a mechanism for the inverse Faraday and the inverse Cotton--Mouton effects arising from quantum geometry, characterized by the quantum metric quadrupole and the weighted quantum metric. Within a semiclassical framework based on the Boltzmann transport theory, we establish a general formalism describing light-induced magnetization in electronic systems as a second-order response to the electric field of light. Using continuum and tight-binding models, we discuss the symmetry constraints on these effects and estimate the magnitudes of the resulting magnetizations. Our results highlight a direct manifestation of quantum-geometric quantities in nonlinear magneto-optical responses and suggest a viable pathway for experimental detection.

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  • We propose a mechanism for the inverse Faraday and the inverse Cotton--Mouton effects arising from quantum geometry, characterized by the quantum metric quadrupole and the...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.09637 [2] arXiv https://arxiv.org/abs/2601.09637 [3] Publisher https://arxiv.org/abs/2601.09637

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