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  • Summary & Details

Roadmap toward the Redefi nition of the SI Second with Optical Lattice Clocks


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Category(E)Hot Topics
Author(J)1) 井戸 哲也
Author(E)1) Tetsuya Ido
Affiliation(J)1) 情報通信研究機構


Abstract(E)The frequency standard, which is one of the most important standards that support a wide range of measurement technologies, has been discussed to be redefined from the conventional definition based on the microwave transition of cesium atoms, to the definition based on the optical transition as represented by optical lattice clocks. The conditions to be satisfied for the redefinition, the progress toward it, and the expected timing of the redefinition are outlined.

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