# Active meta-optics and nanophotonics with halide perovskites

## TL;DR

This paper reviews recent advances in halide perovskite-based meta-optics, highlighting their potential for active nanophotonic devices like nanoantennas and metasurfaces due to their unique optical properties.

## Contribution

It provides a comprehensive overview of how halide perovskites are advancing active meta-optics, focusing on light-emitting nanoantennas and metasurfaces for metadevices.

## Key findings

- Halide perovskites enable low-loss, efficient active meta-optics.
- They facilitate the development of compact nanolasers and light sources.
- Recent progress demonstrates their potential for next-generation nanophotonic devices.

## Abstract

Meta-optics based on optically resonant all-dielectric structures is a rapidly developing research area driven by its potential applications for low-loss efficient metadevices. Active, light-emitting subwavelengh nanostructures and metasurfaces are of a particular interest for meta-optics, as they offer unique opportunities for novel types of compact light sources and nanolasers. Recently, the study of halide perovskites has attracted an enormous attention due to their exceptional optical and electrical properties. As a result, this family of materials can provide a prospective platform for modern nanophotonics and meta-optics, allowing to overcome many obstacles associated with the use of conventional semiconductor materials. Here we review the recent progress in the field of halide-perovskite meta-optics with the central focus on light-emitting nanoantennas and metasurfaces for the emerging field of active metadevices.