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Updated: Oct 11, 2025
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
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Multidimensional spectroscopy of magneto-excitons at high magnetic fields
V Mapara1, C E Stevens1, J Paul1
1Department of Physics, University of South Florida, 4202 East Fowler Ave., Tampa, Florida 33620, USA.
The Journal of Chemical Physics
|December 2, 2021
Summary
Two-dimensional Fourier transform spectroscopy reveals clear Zeeman splitting in magneto-excitons in gallium arsenide (GaAs). This technique enables precise measurement of Landé g factors and explores quantum correlations.
Area of Science:
- Solid State Physics
- Quantum Optics
- Materials Science
Background:
- Magneto-excitons in semiconductors are crucial for understanding light-matter interactions.
- Zeeman splitting provides insights into electronic structures under magnetic fields.
- Two-dimensional spectroscopy offers advanced methods for probing quantum phenomena.
Purpose of the Study:
- To investigate Zeeman splitting of magneto-excitons in GaAs using 2D Fourier transform spectroscopy.
- To precisely measure Landé g factors and explore quantum coherent coupling.
- To study four-particle correlations and the influence of Zeeman splitting on two-quantum transitions.
Main Methods:
- Two-dimensional Fourier transform spectroscopy (2D-FTs) at various magnetic fields.
- Polarization-dependent one-quantum 2D spectroscopy.
- Two-quantum 2D spectroscopy.
- Simulation using optical Bloch equations with phenomenological many-body effects.
Main Results:
- Clear resolution of Zeeman components in 2D spectra, enabling accurate Landé g factor determination.
- Observation of quantum coherent coupling between Zeeman components.
- Investigation of four-particle correlations and their dependence on Zeeman splitting.
Conclusions:
- 2D-FTs is a powerful tool for resolving fine spectral features like Zeeman splitting in magneto-excitons.
- The study elucidates the role of Zeeman splitting in quantum correlations and transitions.
- Phenomenological modeling provides a framework for understanding complex many-body effects.
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