Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock

S. Bize, S. A. Diddams, U. Tanaka +10

Over a two-year duration, we have compared the frequency of the 199Hg+ 5d106s 2S 1/2 (F=0)<-> 5d9 6s2 2D 5/2 (F=2) electric-quadrupole transition at 282 nm with the frequency of th…