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Paper Abstract and Keywords
Presentation 2026-06-18 13:00
[Invited Talk] Toward Next-Generation Photonic Synchronized Infrastructure -- Social Implementation and Prospects of an Optical Frequency Synchronization Network Based on Optical Lattice Clocks --
Kota Nishiyama, Mayuri Nakagawa, Kohjun Koshiji, Makoto Murakami, Hiromitsu Imai, Kenichi Hitachi, Tomoya Akatsuka (NTT), Noriaki Ohmae (Fukuoka University), Hidetoshi Katori (The University of Tokyo), Haruki Sanada, Rie Hayashi, Katsuya Oguri, Tetsuomi Sogawa (NTT) NS2026-36
Abstract (in Japanese) (See Japanese page) 
(in English) Optical clocks are next-generation time and frequency standards with a fractional frequency uncertainty and instability on the order of 10⁻¹⁸, and they are expected to find applications in the field of communications. In this talk, we first present the use cases enabled by ultra-precise optical frequency synchronization networks based on optical lattice clocks. We then introduce recent research and development efforts toward realizing these use cases, and finally discuss future prospects
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Frequency Synchronization Network / Optical Lattice Clock / Optical Frequency Comb / Optical Frequency Repeater / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 75, NS2026-36, pp. 1-4, June 2026.
Paper # NS2026-36 
Date of Issue 2026-06-11 (NS) 
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 NS2026-36

Conference Information
Committee OCS NS PN  
Conference Date 2026-06-18 - 2026-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NS 
Conference Code 2026-06-OCS-NS-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Toward Next-Generation Photonic Synchronized Infrastructure 
Sub Title (in English) Social Implementation and Prospects of an Optical Frequency Synchronization Network Based on Optical Lattice Clocks 
Keyword(1) Optical Frequency Synchronization Network  
Keyword(2) Optical Lattice Clock  
Keyword(3) Optical Frequency Comb  
Keyword(4) Optical Frequency Repeater  
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1st Author's Name Kota Nishiyama  
1st Author's Affiliation NTT, Inc. (NTT)
2nd Author's Name Mayuri Nakagawa  
2nd Author's Affiliation NTT, Inc. (NTT)
3rd Author's Name Kohjun Koshiji  
3rd Author's Affiliation NTT, Inc. (NTT)
4th Author's Name Makoto Murakami  
4th Author's Affiliation NTT, Inc. (NTT)
5th Author's Name Hiromitsu Imai  
5th Author's Affiliation NTT, Inc. (NTT)
6th Author's Name Kenichi Hitachi  
6th Author's Affiliation NTT, Inc. (NTT)
7th Author's Name Tomoya Akatsuka  
7th Author's Affiliation NTT, Inc. (NTT)
8th Author's Name Noriaki Ohmae  
8th Author's Affiliation Fukuoka University (Fukuoka University)
9th Author's Name Hidetoshi Katori  
9th Author's Affiliation The University of Tokyo (The University of Tokyo)
10th Author's Name Haruki Sanada  
10th Author's Affiliation NTT, Inc. (NTT)
11th Author's Name Rie Hayashi  
11th Author's Affiliation NTT, Inc. (NTT)
12th Author's Name Katsuya Oguri  
12th Author's Affiliation NTT, Inc. (NTT)
13th Author's Name Tetsuomi Sogawa  
13th Author's Affiliation NTT, Inc. (NTT)
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Speaker Author-1 
Date Time 2026-06-18 13:00:00 
Presentation Time 45 minutes 
Registration for NS 
Paper # NS2026-36 
Volume (vol) vol.126 
Number (no) no.75 
Page pp.1-4 
#Pages 4 
Date of Issue 2026-06-11 (NS) 

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