Dimarcq, N; Gertsvolf, M; Mileti, G; Bize, S; Oates, C W; Peik, E; Calonico, D; Ido, T; Tavella, P; Meynadier, F; Petit, G; Panfilo, G; Bartholomew, J; Defraigne, P; Donley, E A; Hedekvist, P O; Sesia, I; Wouters, M; Dube, P; Fang, F; Levi, F; Lodenyck, J; Margolis, H S; Newell, D; Slyusarev, S; Weyers, S; Uzan, J-P; Yasuda, M; Yu, D-H; Rieck, C; Schnatz, H; Hanado, Y; Fujieda, M; Pottie, P-E; Hanssen, J; Malimon, A; Ashby, N (2024) Roadmap towards the redefinition of the second. Metrologia, 61 (1). 012001

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Abstract

This paper outlines the roadmap towards the redefinition of the second recently updated by the Task Force created by the CCTF in 2020. The main achievements and the open challenges related to the status of the optical frequency standards, their contribution to time scales and UTC, the possibility of their comparison and the knowledge of the Earth gravitational potential at the necessary level of uncertainty are discussed. Also, the mandatory criteria to be achieved before redefinition and their current fulfillment level, together with the redefinition options based on a single or on a set of transitions are described.

Item Type:	Article
Subjects:	Time and Frequency > Time
Divisions:	Time & Frequency
Identification number/DOI:	10.1088/1681-7575/ad17d2
Last Modified:	28 Jun 2024 13:49
URI:	http://eprintspublications.npl.co.uk/id/eprint/9977

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