Silicon CMOS architecture for a spin-based quantum computer

M. Veldhorst (), H. G. J. Eenink, C. H. Yang and A. S. Dzurak ()
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M. Veldhorst: Qutech and Kavli Institute of Nanoscience
H. G. J. Eenink: Qutech and Kavli Institute of Nanoscience
C. H. Yang: The University of New South Wales
A. S. Dzurak: The University of New South Wales

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Recent advances in quantum error correction codes for fault-tolerant quantum computing and physical realizations of high-fidelity qubits in multiple platforms give promise for the construction of a quantum computer based on millions of interacting qubits. However, the classical-quantum interface remains a nascent field of exploration. Here, we propose an architecture for a silicon-based quantum computer processor based on complementary metal-oxide-semiconductor (CMOS) technology. We show how a transistor-based control circuit together with charge-storage electrodes can be used to operate a dense and scalable two-dimensional qubit system. The qubits are defined by the spin state of a single electron confined in quantum dots, coupled via exchange interactions, controlled using a microwave cavity, and measured via gate-based dispersive readout. We implement a spin qubit surface code, showing the prospects for universal quantum computation. We discuss the challenges and focus areas that need to be addressed, providing a path for large-scale quantum computing.

Date: 2017
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DOI: 10.1038/s41467-017-01905-6

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