Indistinguishable photons from an artificial atom in silicon photonics

Silicon is the ideal material for building electronic and photonic circuits at scale. Integrated photonic quantum technologies in silicon offer a promising path to scaling by leveraging advanced semiconductor manufacturing and integration capabilities. However, the lack of deterministic quantum light sources and strong photon-photon interactions in silicon poses a challenge to scalability. In this work, we demonstrate an indistinguishable photon source in silicon photonics based on an artificial atom. We show that a G center in a silicon waveguide can generate high-purity telecom-band single photons. We further demonstrate the indistinguishability of single photons emitted from a G center in a silicon waveguide. Our results show that silicon photonics can provide single photon sources for photonic quantum networks and processors.

Lukasz Komza, Polnop Samutpraphoot, Mutasem Odeh, Yu-Lung Tang, Milena Mathew, Jiu Chang, Hanbin Song, Myung-Ki Kim, Yihuang Xiong, Geoffroy Hautier, Alp Sipahioglu