Three-dimensional quantum Hall states as a chiral electromagnetic filter
ORAL
Abstract
Extensive research has explored the optical properties of topological insulating materials, driven by their inherent stability and potential applications. In this study, we unveil a novel functionality of three-dimensional integer quantum Hall (3D IQH) states as broad-band filters for circularly polarized light, particularly effective in the terahertz (THz) frequency range under realistic system parameters. We also investigate the impact of practical imperfections, demonstrating the resilience of this filtering effect. Our findings reveal that this phenomenon is independent of the microscopic origin of the 3D IQH state, prompting discussions on its feasibility across diverse candidate materials. These results contribute to our understanding of fundamental optical properties and hold promise for practical applications in optical technologies.
*This work was primarily led and supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center (N.M.). V.P. is grateful for the generous support from the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant GBMF8682. N.M. and V.P. appreciate the support received from the Institute of Quantum Information and Matter.
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Publication: https://arxiv.org/abs/2405.09617
Presenters
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Nandagopal Manoj
- Caltech