Transportable strontium lattice clock with $4\times 10^{-19}$ blackbody radiation shift uncertainty

I. Nosske, C. Vishwakarma, T. Lücke +6

We describe a transportable optical lattice clock based on the ${}^1{\mathrm{S}}_0\to {}^3{\mathrm{P}}_0$ transition of lattice-trapped ${}^{87}$Sr atoms with a total systematic u…