Archivio Istituzionale della RicercaThe recently concluded collaborative European project "Robust optical clocks for international timescales"(ROCIT) tackled some of the key challenges on the roadmap towards a redefinition of the SI second. This paper gives an overview of progress made on improving the robustness and automation of optical clocks and verifying their uncertainty budgets through coordinated international comparison campaigns. It also presents work on the incorporation of optical clocks into time scales, covering both their use to steer local physical time scales and their use for evaluations of hydrogen masers contributing data for the computation of International Atomic Time (TAI). The overall objective of the project was to bring European optical clocks to the stage where they could be operated routinely as secondary frequency standards, regularly contributing to TAI.
Robust Optical Clocks for International Timescales (ROCIT) / Margolis, H. S.; Godun, R. M.; Huntemann, N.; Le Targat, R.; Pizzocaro, M.; Zawada, M.; Abgrall, M.; Akamatsu, D.; Alvarez Martinez, H.; Amy-Klein, A.; Andia, M.; Benkler, E.; Bhatt, N. M.; Bilicki, S.; Bize, S.; Bober, M.; Calonico, D.; Cambier, V.; Cantin, E.; Chardonnet, C.; Cifuentes Marin, M.; Clivati, C.; Condio, S.; Curtis, E. A.; Czubla, A.; Dolea3/4al, M.; Dorscher, S.; Dunst, P.; Feng, C. -H.; Filzinger, M.; Folman, R.; Fordell, T.; Formichella, V.; Foucault, Y.; Galleani, L.; Goti, I.; Groswasser, D.; Gruszczynski, M.; Guo, C.; Hanhijarvi, K. J.; Hausser, H. N.; Hill, I. R.; Hosaka, K.; Johnson, M. Y. H.; Keller, J.; Klose, J.; Kobayashi, T.; Koke, S.; Kovacic, D.; Kren, P.; Kuhl, A.; Ledzinski, A.; Lemanski, D.; Levi, F.; Lindvall, T.; Lisdat, C.; Liu, H.; Lodewyck, J.; Lopez, O.; Lorini, L.; Lours, M.; Masika, P.; Mazouth-Laurol, M.; Mehlstaubler, T. E.; Moreno, W.; Morzynski, P.; Naroa1/4nik, M.; Nawrocki, J.; Nishiyama, A.; Nogas, P.; Nordmann, T.; Parsons, A. O.; Pointard, B.; Pottie, P. E.; Risaro, M.; Robertson, B. I.; Romero Gonzalez, J.; Schioppo, M.; Sesia, I.; Shang, H.; Signorile, G.; Stahl, K.; Steinel, M.; Sterr, U.; Suarez Ramirez, J.; Tofful, A.; Tonnes, M.; Tran, A.; Tunesi, J.; Wallin, A. E.; Waterholter, T.; Zarei, M.; Zyskind, C.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - ELETTRONICO. - 2889:1(2024), pp. 1-9. [10.1088/1742-6596/2889/1/012022]
Robust Optical Clocks for International Timescales (ROCIT)
Condio S.;Galleani L.;
2024
Abstract
The recently concluded collaborative European project "Robust optical clocks for international timescales"(ROCIT) tackled some of the key challenges on the roadmap towards a redefinition of the SI second. This paper gives an overview of progress made on improving the robustness and automation of optical clocks and verifying their uncertainty budgets through coordinated international comparison campaigns. It also presents work on the incorporation of optical clocks into time scales, covering both their use to steer local physical time scales and their use for evaluations of hydrogen masers contributing data for the computation of International Atomic Time (TAI). The overall objective of the project was to bring European optical clocks to the stage where they could be operated routinely as secondary frequency standards, regularly contributing to TAI.
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https://hdl.handle.net/11583/2996469