학술논문
Absolute frequency measurement of the 171Yb optical lattice clock at INRIM
Document Type
Conference
Author
Source
2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS) Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS), 2017 Joint Conference of the European. :813-814 Jul, 2017
Subject
Language
ISSN
2327-1949
Abstract
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.