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New Joint Scientific Paper on CMOS Integrated Circuits for Quantum Computing Published in IEEE

Equal1 is pleased to announce the publication of a significant joint scientific paper in the inaugural issue of IEEE Transactions on Quantum Engineering by the industry and academic leaders in the field. The paper, titled "CMOS Integrated Circuits for Quantum Information Sciences," devotes 30 pages to the role of integrated circuits in powering a range of quantum computers, quantum communication and quantum sensing.

In the last ten years, we've seen remarkable advancements in quantum technologies. Many researchers are exploring how classical integrated circuits can combine with quantum mechanical systems. This combination of classical electronics is paving the way for quantum computing systems that are more compact, efficient, and scalable than previously conceivable.

The article, drafted by 30 authors from well-known companies and universities, reviews some of the early integrated circuits for quantum information sciences. The paper elaborates on CMOS and BiCMOS integrated circuits across different quantum realms, including nuclear magnetic resonance, nitrogen-vacancy-based magnetometry, trapped-ion, superconductor, and quantum-dot-based quantum computing. Each segment first outlines the essential technological prerequisites, followed by a description of proof-of-concept integrated circuits. The paper concludes by summarizing some of the many open research areas in the quantum information sciences for CMOS designers.

The paper's lead author, Joseph Bardin, holds a dual role: as a research scientist with Google AI Quantum where he leads the IC development, and a full professor at the University of Massachusetts Amherst. Joseph was assisted in his consortium leading task by an MIT professor of high-frequency electronics, Ruonan Han.

Approximately three years ago, the authors initiated a consortium comprising early contributors to chronicle the evolving state-of-the-art CMOS circuits for quantum computing. Equal1 was pleased to share insights on our innovative Quantum System-on-Chip (QSoC). We discussed the potential of producing a commercial quantum computer crafted through high-volume foundry CMOS process technology. This would seamlessly integrate qubits with interface electronics on a single die and operate at 4K using a miniaturized portable cooler. While the primary focus was on the early implementation of charge qubits, the paper also provides an update on spin and hybrid qubits.

Compiling a cohesive paper with contributions from 30 authors across 20 world-renowned organizations and nine collaborative groups was no small feat. The contributing organizations include the University of Massachusetts Amherst, Forschungszentrum Jülich GmbH; RWTH Aachen University; Massachusetts Institute of Technology; University of Macau; University College Dublin; Harvard University; Univ. Grenoble Alpes, CEA, LETI; University of Stuttgart; Delft University of Technology; Equal1; IonQ, Inc.; EPFL; Google; Cornell University; University of Toronto; and U.C. Berkeley.

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