Traceability of optical frequency to SI second via UTC(NIM)

Traceability of optical frequency to SI second via UTC(NIM)
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通过 UTC(NIM) 可追溯至 SI 秒的光频率

DOI:
10.3389/fphy.2022.970450
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发表时间:
2022-08
期刊:
Frontiers Media SA
影响因子:
--
通讯作者:
Aimin Zhang
Aimin Zhang
中科院分区:
其他
文献类型:
--
作者:
Yuzhuo Wang;Yige Lin;Yuan Gao;Aimin Zhang

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光学时钟的绝对频率测量是在国际单位制中重新定义秒的一个里程碑。本文简要总结了利用UTC(NIM)到国际原子时的频率比对链路测量光学钟与秒的频率比。提出了减小测量系统和死区时间引入的不确定度的策略和建议,指导了近3年来对3个10−-16级光钟的频率测量。
Absolute frequency measurement of an optical clock is a milestone towards the redefinition of second in the International System of Units. This work summarizes briefly the measurement of frequency ratio between an optical clock and the second, applying the frequency comparison link from UTC(NIM) to International Atomic Time. Some strategies and suggestions are proposed to reduce the uncertainty introduced by the measurement system and dead time, which guided the frequency measurement of three optical clocks at 10 −16 level in the past 3 years.
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