Indistinguishable photons from an artificial atom in silicon photonics

Lukasz Komza, Polnop Samutpraphoot, Mutasem Odeh, Yu-Lung Tang, Milena Mathew, Jiu Chang, Hanbin Song, Myung-Ki Kim, Yihuang Xiong, Geoffroy Hautier and Alp Sipahigil ()
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Lukasz Komza: University of California, Berkeley
Polnop Samutpraphoot: Lawrence Berkeley National Laboratory
Mutasem Odeh: Lawrence Berkeley National Laboratory
Yu-Lung Tang: University of California, Berkeley
Milena Mathew: Lawrence Berkeley National Laboratory
Jiu Chang: University of California, Berkeley
Hanbin Song: University of California, Berkeley
Myung-Ki Kim: University of California, Berkeley
Yihuang Xiong: Dartmouth College
Geoffroy Hautier: Dartmouth College
Alp Sipahigil: University of California, Berkeley

Nature Communications, 2024, vol. 15, issue 1, 1-5

Abstract: Abstract 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 perform high-resolution spectroscopy and time-delayed two-photon interference to demonstrate the indistinguishability of single photons emitted from a G center in a silicon waveguide. Our results show that artificial atoms in silicon photonics can source single photons suitable for photonic quantum networks and processors.

Date: 2024
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DOI: 10.1038/s41467-024-51265-1

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