Suppress Blackbody Radiation Shift with Two Clock Ytterbium Clock Transition

摘要

In order to suppress the blackbody radiation shift of ytterbium(Yb) lattice clock, we adopt the idea of the synthetic frequency by means of the two clock transitions which correspond to the static values of the scalar and tensor dipole polarizabilities with the AMBiT software package. We have obtained the synthetic wavelength around 647.7 nm and expected when the clock laser is working at the synthetic wavelength, the systematic uncertainty due to the BBR shift can be suppressed at the level of 10–18 or even lower.