# The Group-IV-Vacancy Color Center in Diamond

## TL;DR

This paper reviews and refines theoretical models of Group-IV vacancy centers in diamond, predicting their properties and guiding experimental efforts for quantum information applications.

## Contribution

It provides a comprehensive theoretical framework for XV centers, integrating intrinsic and external interactions, and offers predictions to support future experimental research.

## Key findings

- Refined models explain experimental data.
- Predicted properties of XV centers.
- Guidance for quantum information applications.

## Abstract

Group-IV vacancy (G4V, or XV, where X = Si, Ge, Sn, Pb) color centers constitute a novel and promising class of defects in diamonds. This chapter reviews and refines the theoretical models for the XV systems, encompassing the intrinsic interactions, including spin-orbit coupling and electron-phonon interactions, and the external interactions involving strain, electric, light, and magnetic fields. Based on the refined model, we predict their properties, explain the experimental data, and suggest follow-up experiments. This article established a solid foundation for controlling the XV system, thus paving the way for quantum information processing.