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Updated: Feb 11, 2026
12:21
Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
11.7K
Edge modes of scattering chains with aperiodic order.
Optics Letters
|May 2, 2018
Summary
We discovered topological edge states in disordered chains, revealing novel scattering resonances. These findings advance the design of topological optical metamaterials and devices.
Area of Science:
- Condensed Matter Physics
- Topological Photonics
- Wave Phenomena
Background:
- Aperiodic systems exhibit complex wave behaviors.
- Topological states are typically studied in periodic systems.
- Understanding scattering resonances is crucial for open systems.
Purpose of the Study:
- Investigate scattering resonances in 1D aperiodic chains of electric dipoles.
- Identify and characterize topological edge states in these systems.
- Extend the concept of topological states to open, aperiodic scattering systems.
Main Methods:
- Vectorial Green's matrix method for electromagnetic interactions.
- Analysis of short- and long-range interactions in open systems.
- Characterization of edge-localized modes in various aperiodic models.
Main Results:
- Discovery of edge-localized scattering states within fractal energy gaps.
- Observation of topological band structures in aperiodic systems.
- Identification of power-law localized topological edge modes coexisting with exponential ones.
Conclusions:
- Topological edge modes exist in open aperiodic systems.
- Results extend topological concepts beyond tight-binding models.
- Provides a pathway for designing topological optical metamaterials and devices.
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