Scalable and Programmable Topological Transitions in Plasmonic Moire Superlattices

TL;DR

This paper demonstrates that plasmonic Moire superlattices enable large-scale, programmable topological transitions through wavefront engineering, revealing a new platform for topology control in photonic systems.

Contribution

It introduces a scalable, tunable platform using plasmonic Moire superlattices for programmable topological transitions via wavefront engineering.

Findings

Topological invariants range from -58 to +58 and are tunable by Moire angle.

Symmetry constrains topological invariants, excluding multiples of 3/2.

The platform enables real-space topology control for exploring topological phenomena.

Abstract

Topological transitions are fundamental phenomena in electronics, photonics, and quantum technologies. However, the scalability and tunability of Topological transitions in these systems have still been constrained by their material properties or structural rigidities. Here, we demonstrate that plasmonic Moire superlattices offer a platform for large-range and programmable topological transitions via wavefront engineering. By tailoring the phases of elementary evanescent waves in hexagonal systems, we create Moire-structured optical skyrmion lattices whose topological invariants evolve programmably and scalably. Theoretical calculations indicate that the topological invariants span from -58 to +58 and are extendable by tuning the Moire angle. Remarkably, their values are constrained by symmetry to exclude integer multiples of 3/2, revealing an intrinsic link between symmetry and topological quantization. Our work establishes a versatile real-space topology control platform for exploring topological transitions mechanisms and studying topologically critical phenomena, and further promoting breakthroughs in structured light, photonic computing, and condensed matter physics.