Frequency evaluation of the doubly forbidden 1S0 3P0 transition in bosonic 174Yb
Abstract
We report an uncertainty evaluation of an optical lattice clock based on the 1S03P0 transition in the bosonic isotope 174Yb by use of magnetically induced spectroscopy. The absolute frequency of the 1S03P0 transition has been determined through comparisons with optical and microwave standards at NIST. The weighted mean of the evaluations is (174Yb)=518 294 025 309 217.8(0.9) Hz. The uncertainty due to systematic effects has been reduced to less than 0.8 Hz, which represents 1.5×10-15 in fractional frequency.
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