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Absolute frequency measurement of a Yb optical clock at the limit of the Cs fountain
Irene Goti, Stefano Condio, Cecilia Clivati +6
We present the new absolute frequency measurement of ytterbium (171Yb) obtained at INRiM with the optical lattice clock IT-Yb1 against the cryogenic caesium (133Cs) fountain IT-CsF…
Frequency stability and phase noise measurements of a 5,860 km-long intercontinental seafloor optical fibre cable
Giuseppe Marra, Paul Gaynor, Mattia Cantono +8
Optical clock comparison via optical fibre links has been achieved over continental scales, but has not yet been demonstrated intercontinentally. The transfer of ultra-stable optic…
Improving the resolution of comb-based frequency measurements using a track and hold amplifier
Matias Risaro, Paolo Savio, Marco Pizzocaro +3
The advent of optical frequency standards with ultimate uncertainties in the low 1x10 requires femtosecond frequency combs to support a similar level of resolution in the s…