National Physical Laboratory, Middlesex, UK.
IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Mar;57(3):592-9. doi: 10.1109/TUFFC.2010.1452.
We report on precision laser spectroscopy of the 2S(1/2)(F = 0)-2D(3/2) (F = 2, m(F) = 0) clock transition in a single ion of 171Yb+. The absolute value of the transition frequency, determined using an optical frequency comb referenced to a hydrogen maser, is 688358979309310 +/- 9 Hz. This corresponds to a fractional frequency uncertainty of 1.3 x 10(-14).
我们报告了在单个 171Yb+ 离子中进行的 2S(1/2)(F = 0)-2D(3/2)(F = 2, m(F) = 0) 时钟跃迁的精密激光光谱学。使用参考氢脉泽的光频梳确定的跃迁频率的绝对值为 688358979309310 +/- 9 Hz。这对应于分数频率不确定度为 1.3 x 10(-14)。