Scalable Atomic Arrays for Spin-Based Quantum Computers in Silicon.

Autor: Jakob AM; School of Physics, University of Melbourne, Parkville, VIC, 3010, Australia.; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia., Robson SG; School of Physics, University of Melbourne, Parkville, VIC, 3010, Australia.; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia., Firgau HR; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.; School of Electrical Engineering and Telecommunications, UNSW, Sydney, NSW, 2052, Australia., Mourik V; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.; School of Electrical Engineering and Telecommunications, UNSW, Sydney, NSW, 2052, Australia., Schmitt V; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.; School of Electrical Engineering and Telecommunications, UNSW, Sydney, NSW, 2052, Australia., Holmes D; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.; School of Electrical Engineering and Telecommunications, UNSW, Sydney, NSW, 2052, Australia., Posselt M; Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328, Dresden, Saxony, Germany., Mayes ELH; RMIT Microscopy and Microanalysis Facility, RMIT University, Melbourne, Victoria, 3001, Australia., Spemann D; Leibniz-Institut für Oberflächenmodifizierung e.V., 04318, Leipzig, Saxony, Germany., McCallum JC; School of Physics, University of Melbourne, Parkville, VIC, 3010, Australia.; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia., Morello A; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.; School of Electrical Engineering and Telecommunications, UNSW, Sydney, NSW, 2052, Australia., Jamieson DN; School of Physics, University of Melbourne, Parkville, VIC, 3010, Australia.; ARC Centre for Quantum Computation and Communication Technology (CQC2T), University of Technology Sydney, Sydney, NSW, 2007, Australia.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Oct; Vol. 36 (40), pp. e2405006. Date of Electronic Publication: 2024 Aug 29.
DOI: 10.1002/adma.202405006
Abstrakt: Semiconductor spin qubits combine excellent quantum performance with the prospect of manufacturing quantum devices using industry-standard metal-oxide-semiconductor (MOS) processes. This applies also to ion-implanted donor spins, which further afford exceptional coherence times and large Hilbert space dimension in their nuclear spin. Here multiple strategies are demonstrated and integrated to manufacture scale-up donor-based quantum computers. 31 PF 2 molecule implants are used to triple the placement certainty compared to 31 P ions, while attaining 99.99% confidence in detecting the implant. Similar confidence is retained by implanting heavier atoms such as 123 Sb and 209 Bi, which represent high-dimensional qudits for quantum information processing, while Sb 2 molecules enable deterministic formation of closely-spaced qudits. The deterministic formation of regular arrays of donor atoms with 300 nm spacing is demonstrated, using step-and-repeat implantation through a nano aperture. These methods cover the full gamut of technological requirements for the construction of donor-based quantum computers in silicon.
(© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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