Roadmap towards the redefinition of the second

被引：66

作者：

Dimarcq, N. ^{[1
]}

Gertsvolf, M. ^{[2
]}

Mileti, G. ^{[3
]}

Bize, S. ^{[4
]}

Oates, C. W. ^{[5
]}

Peik, E. ^{[6
]}

Calonico, D. ^{[7
]}

Ido, T. ^{[8
]}

Tavella, P. ^{[9
]}

Meynadier, F. ^{[9
]}

Petit, G. ^{[9
]}

Panfilo, G. ^{[9
]}

Bartholomew, J. ^{[10
]}

Defraigne, P. ^{[11
]}

Donley, E. A. ^{[5
]}

Hedekvist, P. O. ^{[12
]}

Sesia, I ^{[7
]}

Wouters, M. ^{[13
]}

Dube, P. ^{[2
]}

Fang, F. ^{[14
]}

Levi, F. ^{[7
]}

Lodewyck, J. ^{[4
]}

Margolis, H. S. ^{[15
]}

Newell, D. ^{[5
]}

Slyusarev, S. ^{[16
]}

Weyers, S. ^{[6
]}

Uzan, J-p ^{[17
]}

Yasuda, M. ^{[18
]}

Yu, D-h ^{[19
]}

Rieck, C. ^{[12
]}

Schnatz, H. ^{[6
]}

Hanado, Y. ^{[8
]}

Fujieda, M. ^{[8
,21
]}

Pottie, P-e ^{[4
]}

Hanssen, J. ^{[20
]}

Malimon, A. ^{[16
]}

Ashby, N. ^{[5
]}

机构：

[1] Univ Cote Azur, ARTEMIS, Observ Cote Azur, CNRS, Nice, France

[2] CNR, Ottawa, ON, Canada

[3] Univ Neuchatel, Neuchatel, Switzerland

[4] Univ PSL, Sorbonne Univ, LNE SYRTE, Observ Paris,CNRS, Paris, France

[5] Natl Inst Stand & Technol, Boulder, CO USA

[6] Phys Tech Bundesanstalt PTB, Braunschweig, Germany

[7] Ist Nazl Ric Metrolog, Turin, Italy

[8] Natl Inst Informat & Commun Technol, Koganei, Tokyo, Japan

[9] Bur Int Poids & Mesures, Sevres, France

[10] Emirates Metrol Inst QCC EMI, Abu Dhabi, U Arab Emirates

[11] Royal Observ Belgium, Brussels, Belgium

[12] Res Inst Sweden, Boras, Sweden

[13] Natl Measurement Inst, Sydney, Australia

[14] Natl Inst Metrol, Beijing, Peoples R China

[15] Natl Phys Lab, Teddington, England

[16] FSUE VNIIFTRI, Mendeleyevsk, Moscow Reg, Russia

[17] Sorbonne Univ, Inst Astrophys Paris, CNRS, UMR 7095, Paris, France

[18] Natl Metrol Inst Japan, Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan

[19] Korea Res Inst Stand & Sci, Daejeon, South Korea

[20] US Naval Observ USNO, Washington, DC USA

[21] Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo, Japan

来源：

METROLOGIA | 2024年 / 61卷 / 01期

关键词：

second; atomic frequency standard; International System of Units; OPTICAL FREQUENCY; TIME TRANSFER; RELATIVISTIC REDSHIFT; FOUNTAIN-CLOCK; ATOMIC-CLOCK; FIBER LINK; ACCURACY; MICROWAVE; CAVITY; UNCERTAINTY;

D O I：

10.1088/1681-7575/ad17d2

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements of optical frequency standards (OFS) call for reflection on the redefinition of the second, but open new challenges related to the performance of the OFS, their contribution to time scales and UTC, the possibility of their comparison, and the knowledge of the Earth's gravitational potential to ensure a robust and accurate capacity to realize a new definition at the level of 10-18 uncertainty. The mandatory criteria to be achieved before redefinition have been defined and their current fulfilment level is estimated showing the fields that still needed improvement. The possibility to base the redefinition on a single or on a set of transitions has also been evaluated. The roadmap indicates the steps to be followed in the next years to be ready for a sound and successful redefinition.

引用

页数：19

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