# Indistinguishable photons from an artificial atom in silicon photonics

**Authors:** Lukasz Komza, Polnop Samutpraphoot, Mutasem Odeh, Yu-Lung Tang, Milena Mathew, Jiu Chang, Hanbin Song, Myung-Ki Kim, Yihuang Xiong, Geoffroy Hautier, Alp Sipahigil  
**arXiv:** [2211.09305](https://arxiv.org/abs/2211.09305)  
**Date:** 2022-11-17  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/2211.09305v1/

## Key points

- Lukasz Komza and colleagues' research in Nature Communications focuses on generating indistinguishable photons from an artificial atom in silicon photonics.
- Silicon has been recognized as ideal for applications due to scalability through advanced semiconductor manufacturing and integration capabilities.
- The study introduces a new type of indistinguishable photon source based on an artificial atom in a silicon waveguide, addressing previous limitations and demonstrating high-purity single photons in the telecom band.
- High-resolution spectroscopy and time-delayed two-photon interference experiments confirm the indistinguishability of single photons emitted from the G center in the silicon waveguide.
- These results highlight the potential of artificial atoms in silicon to serve as highly coherent single photon sources for quantum technologies.
- Harnessing these indistinguishable photons may lead to advancements in quantum computing and communication technologies, offering valuable insights into leveraging silicon photonics for future developments.

## Summary

In their research published in Nature Communications, Lukasz Komza and colleagues present a groundbreaking study on the generation of indistinguishable photons from an artificial atom in silicon photonics. <br>

 have long been recognized as the ideal application for silicon due to its scalability through advanced semiconductor manufacturing and integration capabilities. However, the lack of deterministic quantum light sources, two-photon gates, and spin-photon interfaces has hindered progress in achieving scalability. <br>

In this work, the researchers introduce a new type of indistinguishable photon source based on an  in a silicon waveguide. This approach addresses previous limitations by demonstrating high-purity single photons in the telecom band - crucial for applications in photonic quantum networks and processors. <br>

Through high-resolution spectroscopy and time-delayed two-photon interference experiments, they confirm the indistinguishability of single photons emitted from the G center in the silicon waveguide. These results highlight the potential of  to serve as highly coherent single photon sources for quantum technologies. <br>

By harnessing these indistinguishable photons generated from artificial atoms in silicon, researchers may pave the way for advancements in  and . The findings presented by Komza et al. offer valuable insights into leveraging silicon photonics for future developments in  and communication technologies.