Light-matter interactions in layered materials and heterostructures: from moir\'e physics and magneto-optical effects to ultrafast dynamics and hybrid meta-photonics

TL;DR

This paper reviews recent advances in light-matter interactions within layered 2D materials and heterostructures, emphasizing moiré physics, ultrafast dynamics, and hybrid photonic integration for future optoelectronic applications.

Contribution

It provides a comprehensive overview of recent progress in understanding and manipulating light-matter interactions in 2D materials, highlighting new phenomena and technological potentials.

Findings

Moiré physics enables control over band structures in twisted heterostructures.

Ultrafast optical and spin-valley phenomena have been characterized in 2D systems.

Integration with photonic platforms opens new avenues for optoelectronic devices.

Abstract

Layered two-dimensional (2D) materials have revolutionized how we approach light-matter interactions, offering unprecedented optical and electronic properties with the potential for vertical heterostructures and manipulation of spin-valley degrees of freedom. The discovery of moir\'e physics in twisted heterostructures has further unlocked new possibilities for controlling the band structure of tailored semiconductor heterostructures. In parallel, the integration of 2D materials with hybrid photonic structures and ultrafast studies on their optical and spin-valley properties has revealed a wealth of novel physical phenomena. This perspective highlights the recent advances in our understanding of light-matter interactions in moir\'e and 2D systems, with a particular emphasis on ultrafast processes and the integration of these materials into photonic platforms. We explore the implications for optoelectronics and emerging photonic technologies, positioning 2D materials as a transformative tool for next-generation devices.