Systematic evaluation of an atomic clock at 2 × 10-18 total uncertainty

by Nicholson, T.L, Campbell, S.L, Hutson, R.B, Marti, G.E, Bloom, B.J, McNally, R.L, Zhang, W, Barrett, M.D, Safronova, M.S, Strouse, G.F, Tew, W.L, Ye, J
Published 2020