Such a platform will benefit future high-capacity network systems, navigation, and other services. Since the dawn of history, mankind has elaborated technologies for timekeeping and developed applications to fully use time resources. These technologies have triggered a paradigm-shift in communication and information technologies. In order to facilitate a new breakthrough in industrial and academic fields introduced by highly-precise clocks, we will develop transportable and compact “optical lattice clocks” that allow remote maintenance and unattended operation.

By networking them via phase-stabilized fibers, we will demonstrate clocks’ application to relativistic geodesy and establish a space-time information platform that will substitute GNSS.

output imege of this project

In this project, six groups participate in research and development.

・Optical Clock (OC) Group

 Research and development of system for demonstration of optical lattice clock. 

・Optoelectronics Module (OM) Group

 Development of optoelectronic module for demonstration of optical lattice clock.

・Component (COM) Group

 Development of optical components for demonstration of optical lattice clock.

・Network (NW) Group

 Research and development of fiber networks for realizing optical lattice clock networks.

・Relativistic Geodesy (RG) Group

Research and Development of relativistic geodetic application technology using optical lattice clock.

・Re-definision of the Second (RS) Group

 Promotion and development of redefinition of seconds using optical lattice clock.

Contact us

Space-time information platform with a cloud of optical lattice clocks

2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, JAPAN
Faculty of Engineering Bldg.9
Katori Laboratory
Room no.507

Tel: +81-3-5841-6845
Fax: +81-3-5841-6859
E-mail: jst.katori.hq(at)gmail.com











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