Absolute measurement of the ${}^1{S}_0$ - ${}^3{P}_0$ clock transition in neutral ${}^{88}$Sr over the 330 km-long stabilized fibre optic link

Piotr Morzynski, Marcin Bober, Dobroslawa Bartoszek-Bober +14

We report a stability below $7\times 10{}^{-17}$ of two independent optical lattice clocks operating with bosonic ${}^{88}$Sr isotope. The value (429228066418008.3(1.9)${}_{syst}$(…