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Paper Abstract and Keywords
Presentation 2022-01-21 13:35
[Invited Talk] Yield evaluation of adiabatic quantum-flux-parametron circuits using a planarized 10 kA/cm2 niobium process
Taiki Yamae (Yokohama Natl. Univ./JSPS Research Fellow), Naoki Takeuchi, Nobuyuki Yoshikawa (Yokohama Natl. Univ.) SCE2021-12
Abstract (in Japanese) (See Japanese page) 
(in English) Adiabatic quantum-flux-parametron (AQFP) logic is a superconducting logic family that can operate with low switching energy due to the adiabatic switching. In the present study, we conduct yield evaluation of AQFP circuits using AIST 10 kA/cm2 Nb planarized high-speed standard process (PHSTP). AQFP circuits for yield evaluation are composed of ten blocks, which are approximately 1800-junction AQFP gates per block. The yield of 1800-junction AQFP gates is 77% obtained by 10 chips at low-speed test.
Keyword (in Japanese) (See Japanese page) 
(in English) superconducting integrated circuit / adiabatic quantum-flux-parametron (AQFP) / planarization process / yield evaluation / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 340, SCE2021-12, pp. 1-5, Jan. 2022.
Paper # SCE2021-12 
Date of Issue 2022-01-14 (SCE) 
ISSN Online edition: ISSN 2432-6380
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)
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Conference Information
Committee SCE  
Conference Date 2022-01-21 - 2022-01-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SCE 
Conference Code 2022-01-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Yield evaluation of adiabatic quantum-flux-parametron circuits using a planarized 10 kA/cm2 niobium process 
Sub Title (in English)  
Keyword(1) superconducting integrated circuit  
Keyword(2) adiabatic quantum-flux-parametron (AQFP)  
Keyword(3) planarization process  
Keyword(4) yield evaluation  
1st Author's Name Taiki Yamae  
1st Author's Affiliation Yokohama National University/JSPS Research Fellow (Yokohama Natl. Univ./JSPS Research Fellow)
2nd Author's Name Naoki Takeuchi  
2nd Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
3rd Author's Name Nobuyuki Yoshikawa  
3rd Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
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Speaker Author-1 
Date Time 2022-01-21 13:35:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2021-12 
Volume (vol) vol.121 
Number (no) no.340 
Page pp.1-5 
Date of Issue 2022-01-14 (SCE) 

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