Three-dimensional non-reciprocal transport in photonic topological heterostructure of arbitrary shape

TL;DR

This paper demonstrates a 3D topological heterostructure enabling non-reciprocal electromagnetic wave transport with arbitrary shapes, allowing waves to bypass obstacles without reflection, which could revolutionize wave guiding and energy harvesting.

Contribution

The study introduces a novel 3D topological heterostructure design using Chern vectors, achieving large-volume non-reciprocal transport with arbitrary cross-sectional shapes and obstacle traversal capabilities.

Findings

Experimental observation of cross-shaped field pattern transport

Non-reciprocal energy harvesting demonstrated

Electromagnetic waves traverse obstacles without reflection

Abstract

Electromagnetic wave propagation in three-dimensional space typically suffers omnidirectional scattering when encountering obstacles. In this study, we employed Chern vectors to construct a topological heterostructure, where large-volume non-reciprocal topological transport in three-dimension is achieved. The shape of the cross-section in the heterostructure can be arbitrary designed, and we experimentally observed the distinctive cross-shaped field pattern transport, non-reciprocal energy harvesting, and most importantly, the remarkable ability of electromagnetic wave to traverse obstacles and abrupt structure changes without encountering reflections in 3D space.