# Controlling light emission by engineering atomic geometries in silicon photonics

## TL;DR

This paper demonstrates how engineering atomic geometries within silicon photonics can control light emission, reduce scattering loss, and induce phenomena like Bragg resonances and Fano interference at telecommunication wavelengths.

## Contribution

It introduces a method to manipulate atomic arrangements in silicon photonics to control optical properties and observe new interference effects.

## Key findings

- Atomic geometries induce Bragg resonances at telecom wavelengths.
- Lattice arrangement reduces scattering loss.
- Fano interference observed between resonant modes.

## Abstract

By engineering atomic geometries composed of nearly 1000 atomic segments embedded in micro-resonators we observe Bragg resonances induced by the atomic lattice at the telecommunication wavelength. The geometrical arrangement of erbium atoms into a lattice inside a silicon nitride microring resonator reduces the scattering loss at a wavelength commensurate with the lattice. We confirm dependency of light emission to the atomic positions and lattice spacing and also observe Fano interference between resonant modes in the system.