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Autor:
S M, Brewer, J-S, Chen, A M, Hankin, E R, Clements, C W, Chou, D J, Wineland, D B, Hume, D R, Leibrandt
Publikováno v:
Physical review letters. 123(3)
We describe an optical atomic clock based on quantum-logic spectroscopy of the ^{1}S_{0}↔^{3}P_{0} transition in ^{27}Al^{+} with a systematic uncertainty of 9.4×10^{-19} and a frequency stability of 1.2×10^{-15}/sqrt[τ]. A ^{25}Mg^{+} ion is si