Quantum information processing based on silicon-CMOS technology

ORAL  · Invited

Abstract

In this talk I will discuss the advantages and challenges facing the development of quantum computers employing spin-based quantum processors that can be manufactured using industry-standard silicon CMOS technology. I will begin by discussing the development of SiMOS quantum dot qubits, including the demonstration of high-fidelity single-qubit gates [1], the first demonstration of two-qubit logic gate [2], and assessments of silicon qubit fidelities [3,4]. I will then explore the technical issues related to scaling a CMOS quantum processor [5] up to the millions of qubits that will be required for fault-tolerant QC, including demonstrations of silicon qubit operation above one kelvin [6] and the use of global microwave fields capable of controlling millions of qubits [7].

[1] M. Veldhorst et al., Nature Nanotechnology 9, 981 (2014).

[2] M. Veldhorst et al., Nature 526, 410 (2015).

[3] H. Yang et al., Nature Electronics 2, 151 (2019).

[4] W. Huang et al., Nature 569, 532 (2019).

[5] M. Veldhorst et al., Nature Communications 8, 1766 (2017).

[6] H. Yang et al., Nature 580, 350 (2020).

[7] Vahapoglu et al., Science Advances 7, eabg9158 (2021).

*We acknowledge support from Diraq Pty. Ltd., UNSW Sydney, the Australian Research Council (FL190100167 and CE170100012), the US Army Research Office (W911NF-17-1-0198), and the NSW Node of the Australian National Fabrication Facility. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the US Government. The US Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.

–

Publication: [1] M. Veldhorst et al., Nature Nanotechnology 9, 981 (2014).
[2] M. Veldhorst et al., Nature 526, 410 (2015).
[3] H. Yang et al., Nature Electronics 2, 151 (2019).
[4] W. Huang et al., Nature 569, 532 (2019).
[5] M. Veldhorst et al., Nature Communications 8, 1766 (2017).
[6] H. Yang et al., Nature 580, 350 (2020).
[7] Vahapoglu et al., Science Advances 7, eabg9158 (2021).

Presenters

  • Andrew S Dzurak

    • 1) University of New South Wales, 2) Diraq Pty. Ltd
    • 1) University of New South Wales, 2) Diraq Pty. Ltd.
    • University of New South Wales
    • University of New South Wales, Diraq Pty. Ltd.

Authors

  • Andrew S Dzurak

    • 1) University of New South Wales, 2) Diraq Pty. Ltd
    • 1) University of New South Wales, 2) Diraq Pty. Ltd.
    • University of New South Wales
    • University of New South Wales, Diraq Pty. Ltd.