RQC Colloquium

2nd RQC Colloquium

• Speaker

  Prof. Andrew Dzurak (UNSW Sydney)

• Date

  16:00-17:00 (JST), May 18, 2022 (Wednesday)

• Venue

  Online

• Title

  Silicon-based quantum computing: The path from the laboratory to industrial manufacture

• Inquiries

  rqc_colloquium_inquiry[at]ml.riken.jp

Abstract
In this talk I will give an overview of the development of silicon-based quantum computing (QC), from the basic science through to its prospects for industrial-scale commercialization based on CMOS manufacturing. I begin with Kane’s original proposal [1] for a silicon quantum computer, conceived at UNSW in 1998, based on single donor atoms in silicon, and will review the first demonstrations of such qubits, using both electron spins [2,3] and nuclear spins [4]. I then discuss the development of SiMOS quantum dot qubits, including the demonstration of single-electron occupancy [5], high-fidelity single-qubit gates [6], and the first demonstration of a two-qubit logic gate in silicon [7], together with assessments of silicon qubit fidelities [8,9]. I will also explore the technical issues related to scaling a silicon-CMOS based quantum processor [10] up to the millions of qubits that will be required for fault-tolerant QC, including the recent demonstration of silicon qubit operation above one kelvin [11].

References
[1] B. E. Kane, Nature 393, 133 (1998). [2] A. Morello et al., Nature 467, 687 (2010). [3] J.J. Pla et al., Nature 489, 541 (2012).
[4] J.J. Pla et al., Nature 496, 334 (2013).[5] C.H. Yang et al., Nature Commun. 4, 2069 (2013).
[6] M. Veldhorst et al., Nature Nanotechnol. 9, 981 (2014). [7] M. Veldhorst et al., Nature 526, 410 (2015).
[8] H. Yang et al., Nature Electron. 2, 151 (2019).[9] W. Huang et al., Nature 569, 532 (2019).
[10] M. Veldhorst et al., Nature Commun. 8, 1766 (2017).[11] H. Yang et al., Nature 580, 350 (2020).

Flyer: 2nd RQC Colloquium Flyer