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If you would like to contact us, please use

Phone: 042-327-6985

E-mail: Contact email for the Space-Time Standards Laboratory

Director

井戸　哲也
IDO Tetsuya

ido@nict.go.jp

Researchers

Generation of Standard Time and Frequency
(in alphabetical order)

松原　健祐
MATSUBARA Kensuke

Japan Standard Group,
Group leader
matubara@nict.go.jp

Japan Standard Time
generation and dissemination

有村　智
ARIMURA Satoshi

Technical researcher
satoshi_arimura@nict.go.jp

Public NTP, Telephone JJY,
Time business

後藤　忠広
GOTOH Tadahiro

Senior researcher
tara@nict.go.jp

GNSS links
Quasi-zenith satellite system

蜂須　英和
HACHISU Hidekazu

Senior researcher
hachisu@nict.go.jp

Optical lattice clock

伊東　宏之
ITO Hiroyuki

Senior researcher
hito@nict.go.jp

Japan Standard Time generation

岩間　司
IWAMA Tsukasa

Temporary staff
iwama@nict.go.jp

NTP, time business,
Japan Standard Time

熊谷　基弘
KUMAGAI Motohiro

Senior researcher
mkumagai@nict.go.jp

Cesium fountain clocks,
Fiber time and frequency transfer

松芝　卓二
MATSUSHIBA Takuji

Research engineer
tmatsushiba@nict.go.jp

JJY low-frequency station

宮内　結花
MIYAUCHI Yuka

Research engineer
ymiyauchi@nict.go.jp

Japan Standard Time generation

森川　真樹
MORIKAWA Masaki

Research engineer
mmorikawa@nict.go.jp

Japan Standard Time generation

中尾　清美
NAKAO Kiyomi

Temporary staff
JST Business WEB

ネミッツ　ニルス
NEMITZ, Nils

Senior researcher
nils.nemitz@nict.go.jp

Optical frequency combs,
Optical lattice clock

大坪　望
OHTSUBO Nozomi

Senior researcher
ohtsubo@nict.go.jp

Japan Standard Time generation,
Ion optical clock

トゥネス　マッズ
TONNES, Mads

Researcher
mads.tonnes@nict.go.jp

Optical lattice clock,
Fiber time and frequency transfer

Space-Time Synchronization - Time Distribution

(in alphabetical order)

市川　隆一
ICHIKAWA Ryuichi

Project leader
richi@nict.go.jp

Frequency calibration,
Optical geodesy

原　基揚
HARA Motoaki

Senior researcher
hara.motoaki@nict.go.jp

Atomic clock chip
Beyond 5G / 6G

今村　國康
IMAMURA Kuniyasu

Research engineer
Telephone JJY
JST business WEB


野村 英司
NOMURA Eiji

Research engineer
nomura@nict.go.jp

NTP, White Rabit transfer

齊藤　春夫
SAITO Haruo

Temporary staff
Telephone JJY, NTP,
Time business

志賀　信泰
SHIGA Nobuyasu

Senior researcher
shiga@nict.go.jp

WiWi
Global Strategy

矢野　雄一郎
YANO Yuichiro

Researcher
y-yano@nict.go.jp

Cluster clock
Atomic clock chip

安田　哲
YASUDA Satoshi

Research engineer
sayasuda@nict.go.jp

WiWi

Exploratory Research

(in alphabetical order)

関戸　衛
SEKIDO Mamoru

Project leader
sekido@nict.go.jp

Very large baseline interferometry
Calibration service

木原　亜美
KIHARA Ami

Researcher
a_kihara@nict.go.jp

Ion optical clock

小竹　昇
KOTAKE Noboru

Senior researcher
kotake@nict.go.jp

Calibration services
International relations

上月　雄人
KOZUKI Yuuto

Researcher
y.kozuki@nict.go.jp

Satellite time and frequency transfer

長野　重夫
NAGANO Shigeo

Senior researcher
nagano@nict.go.jp

Terahertz frequency standards

和久井　健太郎
WAKUI Kentaro

Senior researcher
wakui@nict.go.jp

Ion optical clock
High-harmonic generation

Technical Assistants

小室　純一
KOMURO Junichi

Temporary staff
Technical support

小野　徹二
ONO Tetsuji

Research engineer
ono.tetsuji@nict.go.jp

Technical support

Administrative Assistants

江上　裕子
EGAMI Yuko

Administrative specialist
JJY low-frequency station

木村　沙織
KIMURA Saori

Administrative specialist
Planning office

坂本　美香
SAKAMOTO Mika

Administrative specialist
Planning office

塚田　彰子
TSUKADA Akiko

Administrative specialist
Planning office
Spectrum usage fund