论文标题
NMIJ的87SR和171YB光学晶格时钟的提高频率比测量
Improved Frequency Ratio Measurement with 87Sr and 171Yb Optical Lattice Clocks at NMIJ
论文作者
论文摘要
我们报告了用$^{87} $ SR和$^{171} $ YB光学晶格时钟（NMIJ）的$^{171} $ yb光学晶格时钟的提高频率比率。 $^{87} $ sr光学晶格时钟通过多个重大修改增强，并重新评估，降低的不确定性为$ 1.1 \ times10^{ - 16} $。我们采用了$^{171} $ yb光学晶格时钟，不确定性为$ 4 \ times10^{ - 16} $，该$是为国际原子时间（TAI）贡献的。测量结果为$ν_ {\ MATHRM {yb}}/ν_ {\ MathRm {\ MathRM {sr}} $ = 1.207 507 039 343 338 58（49）$ _ {\ m iontry frm { $ 4.1 \ times10^{ - 16} $，比我们以前的测量结果小3.4倍。
We report improved frequency ratio measurement with $^{87}$Sr and $^{171}$Yb optical lattice clocks at the National Metrology Institute of Japan (NMIJ). The $^{87}$Sr optical lattice clock is enhanced with several major modifications and is re-evaluated with a reduced uncertainty of $1.1\times10^{-16}$. We employed a $^{171}$Yb optical lattice clock with an uncertainty of $4\times10^{-16}$ that was developed for contributing to International Atomic Time (TAI). The measurement result is $ν_{\mathrm{Yb}}/ν_{\mathrm{Sr}}$ = 1.207 507 039 343 338 58(49)$_{\mathrm{sys}}$(6)$_{\mathrm{stat}}$ with a fractional uncertainty of $4.1\times10^{-16}$, which is 3.4 times smaller than our previous measurement result.
