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. 2022 Jul;607(7918):266-270.
doi: 10.1038/s41586-022-04821-y. Epub 2022 Jul 13.

Optical observation of single spins in silicon

Daniel B Higginbottom #  1 , Alexander T K Kurkjian #  1   2 , Camille Chartrand  1   2 , Moein Kazemi  1 , Nicholas A Brunelle  1 , Evan R MacQuarrie  1   2 , James R Klein  1 , Nicholas R Lee-Hone  1   2 , Jakub Stacho  1 , Myles Ruether  1 , Camille Bowness  1   2 , Laurent Bergeron  1 , Adam DeAbreu  1 , Stephen R Harrigan  1 , Joshua Kanaganayagam  1 , Danica W Marsden  1 , Timothy S Richards  1 , Leea A Stott  1 , Sjoerd Roorda  3 , Kevin J Morse  1   2 , Michael L W Thewalt  1 , Stephanie Simmons  4   5
Affiliations

Optical observation of single spins in silicon

Daniel B Higginbottom et al. Nature. 2022 Jul.

Abstract

The global quantum internet will require long-lived, telecommunications-band photon-matter interfaces manufactured at scale1. Preliminary quantum networks based on photon-matter interfaces that meet a subset of these demands are encouraging efforts to identify new high-performance alternatives2. Silicon is an ideal host for commercial-scale solid-state quantum technologies. It is already an advanced platform within the global integrated photonics and microelectronics industries, as well as host to record-setting long-lived spin qubits3. Despite the overwhelming potential of the silicon quantum platform, the optical detection of individually addressable photon-spin interfaces in silicon has remained elusive. In this work, we integrate individually addressable 'T centre' photon-spin qubits in silicon photonic structures and characterize their spin-dependent telecommunications-band optical transitions. These results unlock immediate opportunities to construct silicon-integrated, telecommunications-band quantum information networks.

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