Signals from Distant Stars Connect Optical Atomic Clocks across Earth for the First Time
Transportable radio telescopes could provide global high-precision comparisons of the best atomic clocks.
October 8, 2020
National Institute of Information and Communications Technology
Istituto Nazionale di Ricerca Metrologica
Istituto Nazionale di Astrofisica
Bureau International des Poids et Mesures

Upper middle: Transportable 2.4 m antenna installed at NICT in Koganei, Japan.
Upper right: 34 m antenna located at NICT in Kashima, Japan.
Bottom left: The ytterbium optical lattice clock IT-Yb1, operated at INRIM in Torino, Italy.
Bottom right: The strontium optical lattice clock NICT-Sr1, located at NICT in Koganei, Japan.
Press contact
NICT Press Office, Public Relations Department:
HIROTA Sachiko
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INAF Press Office:
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BIPM Time Department:
Gérard Petit
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