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Proceedings Paper

Optical direct comparison of 87Sr optical lattice clocks using a >50 km telecommunication fiber link
Author(s): Hidekazu Hachisu; Atsushi Yamaguchi; Miho Fujieda; Motohiro Kumagai; Shigeo Nagano; Ying Li; Tetsuya Ido; Tetsushi Takano; Masao Takamoto; Hidetoshi Katori
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Paper Abstract

An 87Sr-based-optical lattice clock in NICT is compared to that of The University of Tokyo using a >50 km fiber link. In this work, we have demonstrated for the first time that two distant Sr lattice clocks generate the same frequency with systematic uncertainty of 0.31 Hz (7.3 × 10-16 fractionally) for the 429 THz clock frequency.

Paper Details

Date Published: 12 September 2011
PDF: 8 pages
Proc. SPIE 8132, Time and Frequency Metrology III, 81320A (12 September 2011); doi: 10.1117/12.893357
Show Author Affiliations
Hidekazu Hachisu, National Institute of Information and Communications Technology (Japan)
Japan Science and Technology Agency (Japan)
Atsushi Yamaguchi, National Institute of Information and Communications Technology (Japan)
Japan Science and Technology Agency (Japan)
Miho Fujieda, National Institute of Information and Communications Technology (Japan)
Motohiro Kumagai, National Institute of Information and Communications Technology (Japan)
Shigeo Nagano, National Institute of Information and Communications Technology (Japan)
Ying Li, National Institute of Information and Communications Technology (Japan)
Tetsuya Ido, National Institute of Information and Communications Technology (Japan)
Japan Science and Technology Agency (Japan)
Tetsushi Takano, The Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)
Masao Takamoto, The Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)
Hidetoshi Katori, The Univ. of Tokyo (Japan)
Japan Science and Technology Agency (Japan)


Published in SPIE Proceedings Vol. 8132:
Time and Frequency Metrology III
Tetsuya Ido; Thomas R. Schibli, Editor(s)

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