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| Presentation | 2021-08-17 10:15 [Invited Talk] Buried nanomagnet realizing high-speed/low-variability silicon spin qubits: implementable in error-correctable large-scale quantum computers Shota Iizuka, Kimihiko Kato, Atsushi Yagishita, Hidehiro Asai, Tetsuya Ueda, Hiroshi Oka, Junichi Hattori, Tsutomu Ikegami, Koichi Fukuda, Takahiro Mori (AIST)  SDM2021-30 ICD2021-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We propose a buried nanomagnet (BNM) realizing high-speed/low-variability silicon spin qubit operation, inspired by buried wiring technology, and investigate operation speed and variation tolerance employing TCAD-based simulation. High-speed quantum-gate operation results from large slanting magnetic-field generated by the BNM disposed quite close to a spin qubit, and low-variation of fidelity thanks to the self-aligned fabrication process. We demonstrate that the BNM realizes 10 times faster Rabi oscillation (faster spin-flip) than previous works and >99% fidelity under certain process variations. Also, the proposed BNM arrangement is implementable for error-correctable large-scale quantum computers employing a 2D-latticed qubit layout. This technology paves the way to practical large-scale quantum computers with silicon. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Quantum computer / Silicon spin qubits / Nanomagnet / Buried wiring technology / Large-scale integration / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 138, SDM2021-30, pp. 1-6, Aug. 2021. | |
| Paper # | SDM2021-30 | |
| Date of Issue | 2021-08-10 (SDM, ICD) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SDM2021-30 ICD2021-1 |
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| Conference Information | |
| Committee | SDM ICD ITE-IST |
| Conference Date | 2021-08-17 - 2021-08-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Analog, Mixed Analog and Digital, RF, and Sensor Interface, Low Voltage/Low Power Techniques, Novel Devices/Circuits, and the Applications |
| Paper Information | |
| Registration To | SDM |
| Conference Code | 2021-08-SDM-ICD-IST |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Buried nanomagnet realizing high-speed/low-variability silicon spin qubits: implementable in error-correctable large-scale quantum computers |
| Sub Title (in English) | |
| Keyword(1) | Quantum computer |
| Keyword(2) | Silicon spin qubits |
| Keyword(3) | Nanomagnet |
| Keyword(4) | Buried wiring technology |
| Keyword(5) | Large-scale integration |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shota Iizuka |
| 1st Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 2nd Author's Name | Kimihiko Kato |
| 2nd Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 3rd Author's Name | Atsushi Yagishita |
| 3rd Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 4th Author's Name | Hidehiro Asai |
| 4th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 5th Author's Name | Tetsuya Ueda |
| 5th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 6th Author's Name | Hiroshi Oka |
| 6th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 7th Author's Name | Junichi Hattori |
| 7th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 8th Author's Name | Tsutomu Ikegami |
| 8th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 9th Author's Name | Koichi Fukuda |
| 9th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 10th Author's Name | Takahiro Mori |
| 10th Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| Speaker | Author-1 |
| Date Time | 2021-08-17 10:15:00 |
| Presentation Time | 45 minutes |
| Registration for | SDM |
| Paper # | SDM2021-30, ICD2021-1 |
| Volume (vol) | vol.121 |
| Number (no) | no.138(SDM), no.139(ICD) |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2021-08-10 (SDM, ICD) |
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