论文标题
$^{87}的绝对频率\ Mathrm {sr} $ $ 1.8 \ times 10^{ - 16} $不确定，参考远程主频标准
Absolute frequency of $^{87}\mathrm{Sr}$ at $1.8 \times 10^{-16}$ uncertainty by reference to remote Primary Frequency Standards
论文作者
论文摘要
光学晶格nict-sr1定期报告国际时间尺度TAI的校准测量。通过将测量结果与八个主要频率标准的报告进行比较，我们发现$^{87} \ Mathrm {sr} $时钟过渡的绝对频率为f（sr）= $ 429 \，228 \，228 \，004 \，004 \，229 \，229 \，229 \，with fractions $ nifce $^$ nsional $^$^$^18岁。 SI的最佳实现的系统限制。我们的结果与其他最新测量结果一致，并且在$^{87} \ Mathrm {sr} $，$^{171} \ Mathrm {yb} $和其比率的直接光学测量值的绝对频率上进一步支持。
The optical lattice clock NICT-Sr1 regularly reports calibration measurements of the international timescale TAI. By comparing measurement results to the reports of eight Primary Frequency Standards, we find the absolute frequency of the $^{87}\mathrm{Sr}$ clock transition to be f(Sr)=$429\,228\,004\,229\,873.082(76)$, with a fractional uncertainty of less than 1.8x10$^{-16}$ approaching the systematic limits of the best realization of SI second. Our result is consistent with other recent measurements and further supported by the loop closure over the absolute frequencies of $^{87}\mathrm{Sr}$, $^{171}\mathrm{Yb}$ and direct optical measurements of their ratio.
