Absolute frequency measurement of the ¹⁷¹Yb optical lattice clock at INRIM

Marco Pizzocaro,Pierre Thoumany,Filippo Bregolin,Gianmaria Milani,Benjamin Rauf, María del Carmen Vélez López,Cecilia Clivati,Giovanni A. Costanzo,Filippo Levi,Davide Calonico

2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)（2017）

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摘要

We present the absolute frequency measurement of the transition ¹ S ₀ - ³ P ₀ at 578 nm in ytterbium 171 realized in an optical lattice frequency standard relative to the cryogenic caesium fountain ITCsF2. The measurement result is 518 295 836 590 863.59(31) Hz with a relative standard uncertainty of 5.9 × 10 ^-16 . A contribution of 1.6 × 10 ^-16 is coming from the ytterbium clock and we are working to reduce this contribution to the 1 × 10 ^-17 level.

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absolute frequency measurement,optical lattice frequency standard,cryogenic caesium fountain ITCsF2,measurement result,relative standard uncertainty,ytterbium-171 optical lattice clock,wavelength 578.0 nm,Yb

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Absolute frequency measurement of the 171Yb optical lattice clock at INRIM

Absolute frequency measurement of the ¹⁷¹Yb optical lattice clock at INRIM