2016/09/30 by M. Veldhorst, H. G. J. Eenink, C. H. Yang +1 · 4 citations
Physics and Astronomy · #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1038/s41467-017-01905-6
published as Nature Communications 8, 1766 (2017)
arxiv created 2016/09/30 · arxiv updated 2018/01/18
Recent advances in quantum error correction (QEC) codes for fault-tolerant quantum computing \citeTerhal2015 and physical realizations of high-fidelity qubits in a broad range of platforms \citeKok2007, Brown2011, Barends2014, Waldherr2014, Dolde2014, Muhonen2014, Veldhorst2014 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 entirely on complementary metal-oxide-semiconductor (CMOS) technology, which is the basis for all modern processor chips. 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 states of a single electron confined in a quantum dot, coupled via exchange interactions, controlled using a microwave cavity, and measured via gate-based dispersive readout \citeColless2013. This system, based entirely on available technology and existing components, is compatible with general surface code quantum error correction \citeTerhal2015, enabling large-scale universal quantum computation.