Print Email Facebook Twitter Heterogeneous integration of spin–photon interfaces with a CMOS platform Title Heterogeneous integration of spin–photon interfaces with a CMOS platform Author Li, Linsen (Massachusetts Institute of Technology) De Santis, L. (TU Delft QID/Hanson Lab; TU Delft QuTech Advanced Research Centre; Massachusetts Institute of Technology) Harris, Isaac B.W. (Massachusetts Institute of Technology) Chen, Kevin C. (Massachusetts Institute of Technology) Gao, Yihuai (Massachusetts Institute of Technology) Trusheim, Matthew (Massachusetts Institute of Technology; U.S. Army Research Laboratory) Errando Herranz, C. (Massachusetts Institute of Technology; University of Münster) Du, Jiahui (Massachusetts Institute of Technology) Ibrahim, Mohamed I. (Cornell University College of Engineering) Englund, Dirk (Massachusetts Institute of Technology) Date 2024 Abstract Colour centres in diamond have emerged as a leading solid-state platform for advancing quantum technologies, satisfying the DiVincenzo criteria1 and recently achieving quantum advantage in secret key distribution2. Blueprint studies3–5 indicate that general-purpose quantum computing using local quantum communication networks will require millions of physical qubits to encode thousands of logical qubits, presenting an open scalability challenge. Here we introduce a modular quantum system-on-chip (QSoC) architecture that integrates thousands of individually addressable tin-vacancy spin qubits in two-dimensional arrays of quantum microchiplets into an application-specific integrated circuit designed for cryogenic control. We demonstrate crucial fabrication steps and architectural subcomponents, including QSoC transfer by means of a ‘lock-and-release’ method for large-scale heterogeneous integration, high-throughput spin-qubit calibration and spectral tuning, and efficient spin state preparation and measurement. This QSoC architecture supports full connectivity for quantum memory arrays by spectral tuning across spin–photon frequency channels. Design studies building on these measurements indicate further scaling potential by means of increased qubit density, larger QSoC active regions and optical networking across QSoC modules. To reference this document use: http://resolver.tudelft.nl/uuid:b19fabc9-9612-45c9-b5b3-adf250508766 DOI https://doi.org/10.1038/s41586-024-07371-7 Embargo date 2024-11-29 ISSN 0028-0836 Source Nature: international weekly journal of science, 630 (8015), 70-76 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2024 Linsen Li, L. De Santis, Isaac B.W. Harris, Kevin C. Chen, Yihuai Gao, Matthew Trusheim, C. Errando Herranz, Jiahui Du, Mohamed I. Ibrahim, Dirk Englund, More Authors Files file embargo until 2024-11-29