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Paper Abstract and Keywords
Presentation 2023-05-26 16:05
[Special Invited Talk] Real-time 50-Gbit/s Spatially Multiplexed Quantum Random Number Generator
Ken Tanizawa, Kentaro Kato, Fumio Futami (Tamagawa Univ.) OCS2023-7 OPE2023-7 LQE2023-7
Abstract (in Japanese) (See Japanese page) 
(in English) Unpredictable random number generation is an essential technology for cryptographic applications. Quantum random number generators, which generate random numbers utilizing randomness guaranteed by quantum mechanics, have attracted much attention in recent years. A promising quantum randomness for an entropy source is vacuum fluctuation, which can be detected using a homodyne setup with a laser source and a beam splitter. Quantum random number generators based on vacuum fluctuation can easily and stably realize high-speed random number generation. In this paper, as a PD report of OFC2023, we report a spatially multiplexed quantum random number generator based on vacuum fluctuation using a single semiconductor laser diode and an integrated beam splitter. The random number generator obtains four vacuum fluctuations over a wide bandwidth of more than 2 GHz. Subsequently, random numbers are extracted in parallel using an FPGA circuit. A real-time random number generation rate of 50-Gbit/s is achieved.
Keyword (in Japanese) (See Japanese page) 
(in English) Random number generation / Vacuum fluctuation / Homodyne measurement / Spatial multiplexing / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 56, OCS2023-7, pp. 26-31, May 2023.
Paper # OCS2023-7 
Date of Issue 2023-05-19 (OCS, OPE, LQE) 
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 OCS2023-7 OPE2023-7 LQE2023-7

Conference Information
Committee OCS LQE OPE  
Conference Date 2023-05-26 - 2023-05-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2023-05-OCS-LQE-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Real-time 50-Gbit/s Spatially Multiplexed Quantum Random Number Generator 
Sub Title (in English)  
Keyword(1) Random number generation  
Keyword(2) Vacuum fluctuation  
Keyword(3) Homodyne measurement  
Keyword(4) Spatial multiplexing  
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1st Author's Name Ken Tanizawa  
1st Author's Affiliation Tamagawa University (Tamagawa Univ.)
2nd Author's Name Kentaro Kato  
2nd Author's Affiliation Tamagawa University (Tamagawa Univ.)
3rd Author's Name Fumio Futami  
3rd Author's Affiliation Tamagawa University (Tamagawa Univ.)
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Speaker Author-1 
Date Time 2023-05-26 16:05:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2023-7, OPE2023-7, LQE2023-7 
Volume (vol) vol.123 
Number (no) no.56(OCS), no.57(OPE), no.58(LQE) 
Page pp.26-31 
#Pages 6 
Date of Issue 2023-05-19 (OCS, OPE, LQE) 

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