Related Experiment Video
Updated: Sep 7, 2025
10:35
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
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Three-dimensional Weyl topology in one-dimensional photonic structures
Kosmas L Tsakmakidis1, Tomasz P Stefański2
1Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimioupolis, GR-157 84, Athens, Greece. ktsakmakidis@phys.uoa.gr.
Light, Science & Applications
|June 17, 2022
Summary
Researchers demonstrated complex topological nodal rings, typically needing 3D structures, within a simple 1D photonic crystal. This breakthrough simplifies the creation of advanced topological photonic devices.
Area of Science:
- Photonics
- Condensed Matter Physics
- Topological Materials
Background:
- Topological features like nodal rings are crucial for novel quantum phenomena.
- These features typically necessitate complex three-dimensional (3D) material architectures.
- Achieving such features in lower dimensions presents a significant challenge.
Purpose of the Study:
- To experimentally demonstrate topological nodal rings in a one-dimensional (1D) photonic crystal.
- To investigate the feasibility of realizing complex topological phenomena in simplified structures.
- To pave the way for novel photonic device applications.
Main Methods:
- Fabrication of an "elegantly simple" one-dimensional photonic crystal.
- Experimental characterization of the photonic band structure.
- Analysis of band intersections to identify topological features.
Main Results:
- Successful experimental observation of distinct band intersections, characteristic of nodal rings.
- Demonstration that these topological features can exist in a 1D system.
- Validation of the simplified 1D photonic crystal as a platform for topological phenomena.
Conclusions:
- Topological nodal rings can be realized in a simplified one-dimensional photonic crystal.
- This finding challenges the conventional requirement of 3D structures for such topological features.
- The results open new avenues for designing and fabricating advanced topological photonic devices with reduced complexity.
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