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Paper Abstract and Keywords
Presentation 2021-01-19 14:35
Design and Evaluation of Random Number Generators Based on Non-Adiabatic Quantum-Flux-Parametron Gates
Wenhui Luo, Naoki Takeuchi, Olivia Chen, Nobuyuki Yoshikawa (Yokohama Natl. Univ.) SCE2020-20
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a random number generator (RNG) using non-adiabatic quantum-flux-parametron (QFP) gates. The RNG is a simple QFP buffer chain to which offset input current is applied to control the probability of generating 1s and 0s. Whereas conventional RNGs generate pseudo-random numbers using deterministic algorithms, the proposed RNG utilizes thermal noises to obtain true random numbers. To reduce autocorrelation, we insert large inductors between adjacent buffers to weaken the back action from the following buffers to the first buffer, which generates random numbers, and set the first buffer to a non-adiabatic operation mode by increasing the critical current of JJs to make the buffer less sensitive to back action. Furthermore, we propose a multi-output random number generation scheme and evaluate the autocorrelation of all output sequences. We have designed and fabricated a non-adiabatic RNG using the AIST 10 kA/cm^2 Nb high-speed standard process (HSTP) and evaluated the quality of the generated random bit streams. We believe that QFP-based RNGs can be used for applications such as stochastic computing.
Keyword (in Japanese) (See Japanese page) 
(in English) random number generator / non-adiabatic quantum-flux-parametron / autocorrelation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 313, SCE2020-20, pp. 19-23, Jan. 2021.
Paper # SCE2020-20 
Date of Issue 2021-01-12 (SCE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 2021-01-19 - 2021-01-19 
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 2021-01-SCE 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design and Evaluation of Random Number Generators Based on Non-Adiabatic Quantum-Flux-Parametron Gates 
Sub Title (in English)  
Keyword(1) random number generator  
Keyword(2) non-adiabatic quantum-flux-parametron  
Keyword(3) autocorrelation  
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1st Author's Name Wenhui Luo  
1st Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
2nd Author's Name Naoki Takeuchi  
2nd Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
3rd Author's Name Olivia Chen  
3rd Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
4th Author's Name Nobuyuki Yoshikawa  
4th Author's Affiliation Yokohama National University (Yokohama Natl. Univ.)
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Speaker Author-1 
Date Time 2021-01-19 14:35:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2020-20 
Volume (vol) vol.120 
Number (no) no.313 
Page pp.19-23 
#Pages
Date of Issue 2021-01-12 (SCE) 


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