Scalable Atomic Arrays for Spin-Based Quantum Computers in Silicon

被引：1
|
作者：
Jakob, Alexander M. [1 ,2 ]
Robson, Simon G. [1 ,2 ]
Firgau, Hannes R. [2 ,3 ]
Mourik, Vincent [2 ,3 ]
Schmitt, Vivien [2 ,3 ]
Holmes, Danielle [2 ,3 ]
Posselt, Matthias [4 ]
Mayes, Edwin L. H. [5 ]
Spemann, Daniel [6 ]
Mccallum, Jeffrey C. [1 ,2 ]
Morello, Andrea [2 ,3 ]
Jamieson, David N. [1 ,2 ]
机构：
[1] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia
[2] Univ Technol Sydney, ARC Ctr Quantum Computat & Commun Technol CQC2T, Sydney, NSW 2007, Australia
[3] UNSW, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
[4] Helmholtz Zent Dresden Rossendorf HZDR, D-01328 Dresden, Saxony, Germany
[5] RMIT Univ, RMIT Microscopy & Microanal Facil, Melbourne, Vic 3001, Australia
[6] Leibniz Inst Oberflachenmodifizierung e V, D-04318 Leipzig, Saxony, Germany
来源：
ADVANCED MATERIALS | 2024年 / 36卷 / 40期
基金：
澳大利亚研究理事会;
关键词：
deterministic single ion implantation; donor spin qubits and qudits; electronic device engineering; scalable atomic arrays; silicon quantum computing; ION-IMPLANTATION; DAMAGE; PHOTODIODES; INFORMATION; SIMULATION; PROFILES; ANTIMONY;
D O I：
10.1002/adma.202405006
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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. 31PF2 molecule implants are used to triple the placement certainty compared to 31P ions, while attaining 99.99% confidence in detecting the implant. Similar confidence is retained by implanting heavier atoms such as 123Sb and 209Bi, which represent high-dimensional qudits for quantum information processing, while Sb2 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. Ion-implanted silicon donor spin qubits afford exceptional quantum performance and show promise for the maturation to powerful quantum computers using standard semiconductor industry processes. This study presents a comprehensive technological suite for the scalable deterministic construction of donor-based qubit and qudit arrays that could be used as quantum processor architectures. image
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页数：10
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