Improved absolute frequency measurement of 171Yb at NMIJ with uncertainty below 2x10-16

被引：0

作者：

Kobayashi, Takumi ^{[1
]}

Nishiyama, Akiko ^{[1
]}

Hosaka, Kazumoto ^{[1
]}

Akamatsu, Daisuke ^{[2
]}

Kawasaki, Akio ^{[1
]}

Wada, Masato ^{[1
]}

Inaba, Hajime ^{[1
]}

Tanabe, Takehiko ^{[1
]}

Yasuda, Masami ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan NMIJ, 1-1-1 Umezono, Tsukuba, Ibaraki 3058563, Japan

[2] Yokohama Natl Univ, Grad Sch Engn Sci, Dept Phys, 79-5Tokiwadai,Hodogaya ku, Yokohama 2408501, Japan

来源：

METROLOGIA | 2025年 / 62卷 / 02期

基金：

日本学术振兴会;

关键词：

optical lattice clock; SI second; frequency metrology; OPTICAL LATTICE; ACCURACY; CLOCK; TRANSITION;

D O I：

10.1088/1681-7575/adb754

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report improved absolute frequency measurement of the S-1(0)-P-3(0) transition of Yb-171 at National Metrology Institute of Japan (NMIJ) by comparing the Yb-171 optical lattice clock NMIJ-Yb1 with 13 Cs primary frequency standards via International Atomic Time from August 2021 to May 2023. The measured absolute frequency is 518 295 836 590 863.62(10) Hz with a fractional uncertainty of 1.9x10(-16), in good agreement with the recommended frequency of Yb-171 as a secondary representation of the second. This uncertainty is 2.6 times lower than our previous measurement uncertainty, and slightly lower than any uncertainties of the absolute frequency measurements of Yb-171 that have so far been reported by other institutes. We also estimate correlation coefficients between our present and previous measurements, which is important for updating the recommended frequency.

引用

页数：10

共 24 条

[21] A compact, transportable optical clock with 1 x 10-17 uncertainty and its absolute frequency measurement
Cao, Jian
Yuan, Jinbo
Wang, Shaomao
Zhang, Ping
Yuan, Yi
Liu, Daoxin
Cui, Kaifeng
Chao, Sijia
Shu, Hualin
Lin, Yige
Cao, Shiying
Wang, Yuzhuo
Fang, Zhanjun
Fang, Fang
Li, Tianchu
Huang, Xueren
APPLIED PHYSICS LETTERS, 2022, 120 (05)
[22] A87Sr optical lattice clock with 2.9 x 10 -17 uncertainty and its absolute frequency measurement
Lin, Yige
Wang, Qiang
Meng, Fei
Cao, Shiying
Wang, Yuzhuo
Li, Ye
Sun, Zhen
Lu, Bingkun
Yang, Tao
Lin, Baike
Zhang, Aimin
Fang, Fang
Fang, Zhanjun
METROLOGIA, 2021, 58 (03)
[23] Improved Evaluation of BBR and Collisional Frequency Shifts of NIM-Sr2 with 7.2 x 10-18 Total Uncertainty
Lu, Bing-Kun
Sun, Zhen
Yang, Tao
Lin, Yi-Ge
Wang, Qiang
Li, Ye
Meng, Fei
Lin, Bai-Ke
Li, Tian-Chu
Fang, Zhan-Jun
CHINESE PHYSICS LETTERS, 2022, 39 (08)
[24] Absolute frequency measurement with uncertainty below 1×10-15\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$1\times 10^{-15}$$\end{document} using International Atomic Time
Hidekazu Hachisu
Gérard Petit
Tetsuya Ido
Applied Physics B, 2017, 123 (1)

← 1 2 3 →