Measurement of the 27Al+ and 87Sr absolute optical frequencies,Metrologia

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Measurement of the 27Al+ and 87Sr absolute optical frequencies
Metrologia ( IF 2.1 ) Pub Date : 2021-01-22 , DOI: 10.1088/1681-7575/abd040
Holly Leopardi _{1,

2,

3} , Kyle Beloy ₁ , Tobias Bothwell ₄ , Samuel M Brewer _{1,

2} , Sarah L Bromley ₄ , Jwo-Sy Chen _{1,

2} , Scott A Diddams _{1,

2} , Robert J Fasano _{1,

2} , Youssef S Hassan _{1,

2} , David B Hume ₁ , Dhruv Kedar ₄ , Colin J Kennedy _{1,

4} , David R Leibrandt _{1,

2} , Andrew D Ludlow ₁ , William F McGrew _{1,

2} , William R Milner ₄ , Daniele Nicolodi _{1,

2} , Eric Oelker _{1,

4} , Thomas E Parker ₁ , John M Robinson ₄ , Stefania Romisch ₁ , Jeff A Sherman ₁ , Lindsay Sonderhouse ₄ , Jian Yao _{1,

4} , Jun Ye _{1,

4} , Xiaogang Zhang _{1,

2} , Tara M Fortier _{1,

2}

Affiliation

We perform absolute measurement of the ²⁷Al⁺ single-ion and ⁸⁷Sr neutral lattice clock frequencies at the National Institute of Standards and Technology and JILA at the University of Colorado against a global ensemble of primary frequency standards. Over an eight month period multiple measurements yielded the mean optical atomic transition frequencies ${\nu }_{{\text{Al}}^{+}}=1\enspace 121\enspace 015\enspace 393\enspace 207\enspace 859.50\left(0.36\right)$ Hz and ν _Sr = 429 228 004 229 873.19(0.15) Hz, where the stated uncertainties are dominated by statistical noise and gaps in the observation interval (‘dead-time’ uncertainty).

中文翻译：

测量²⁷ Al ⁺和⁸⁷ Sr绝对光学频率

我们在美国国家标准技术研究院和科罗拉多大学的JILA上对²⁷ Al ⁺单离子和⁸⁷ Sr中性点阵时钟频率进行了绝对测量，与全球主要频率标准集合进行了对比。在八个月期间多次测量得到的平均光原子跃迁频率 ${\ nu} _ {{\ text {Al}} ^ {+}} = 1 \ enspace 121 \ enspace 015 \ enspace 393 \ enspace 207 \ enspace 859.50 \ left（0.36 \ right）$ 赫兹和ν _的Sr = 429 228 004 229 873.19（0.15）赫兹，其中所述不确定性是由统计噪声和间隙在观测间隔支配（“死区时间”不确定）。

更新日期：2021-01-22

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