Topological origin of electromagnetic energy sinks

Abstract

It was recently highlighted that nonreciprocal surface waves can be stopped in suitably designed waveguides, leading to the formation of hotspots wherein the electromagnetic fields are massively enhanced. Here, we prove that this phenomenon has a topological origin and is related to a breakdown of the bulk-edge correspondence in electromagnetic continua with no spatial cut-off. Our theoretical analysis shows that nonreciprocal electromagnetic continua can used to realize energy sinks with ultra-singular fields that absorb all the energy generated in their surroundings. Moreover, it is proven that similar energy sinks may be formed in fully reciprocal optical platforms with a parity-time-duality (P-T-D) symmetry.

pre-print, 29 pages, 7 figures Accepted for publication in PR-Applied

References in corpus (13)

• Topological Photonics
• Photonic Analogue of Two-dimensional Topological Insulators and Helical One-Way Edge Transport in Bi-Anisotropic Metamaterials
• Analogs of quantum Hall effect edge states in photonic crystals
• Realization of a three-dimensional photonic topological insulator
• Bulk-edge correspondence for topological photonic continua
• PTD Symmetry Protected Scattering Anomaly in Optics
• Bianisotropic route to the realization and matching of backward-wave metamaterial slabs
• Proof of the bulk-edge correspondence through a link between topological photonics and fluctuation-electrodynamics
• Topological Angular Momentum and Radiative Heat Transport in Closed Orbits
• Topological classification of Chern-type insulators with the photonic Green function
• Coupled Topological Surface Modes in Gyrotropic Structures: Green's Function Analysis
• Superabsorbing metamaterial wormhole: Physical modeling and wave interaction effects
• Absence of unidirectionally propagating surface plasmon-polaritons in nonreciprocal plasmonics

Cited by in corpus (7)

• Physical Violations of the Bulk-Edge Correspondence in Topological Electromagnetics
• Nonreciprocal and non-Hermitian material response inspired by semiconductor transistors
• Photonic analogues of the Haldane and Kane-Mele models
• Ill-defined Topological Phases in Dispersive Photonic Crystals
• Comment on "Nonreciprocal cavities and the time-bandwidth limit"
• Nonreciprocal guided waves in presence of swift electron beams
• Complete absorption of topologically protected waves