International Timescales with Optical Clocks (ITOC)

authored by: H. S. Margolis, R. M. Godun, P. Gill, L. A.M. Johnson, S. L. Shemar, P. B. Whibberley, D. Calonico, F. Levi, L. Lorini, M. Pizzocaro, P. Delva, S. Bize, J. Achkar, H. Denker, L. Timmen, C. Voigt, S. Falke, D. Piester, C. Lisdat, U. Sterr, S. Vogt, S. Weyers, J. Gersl, T. Lindvall, M. Merimaa
Abstract: A new collaborative European project 'International timescales with optical clocks' (ITOC) aims to tackle the key challenges that must be addressed prior to a redefinition of the SI second. A coordinated programme of comparisons will be carried out between European optical clocks developed in five different laboratories, enabling their performance levels to be validated at an unprecedented level of accuracy. Supporting work will be carried out to evaluate relativistic effects that influence the comparisons, including the gravitational redshift of the clock transition frequencies. A proof-of-principle experiment will also be performed to demonstrate that optical clocks could be used to make direct measurements of the Earth's gravity potential with high temporal resolution.
Organisation(s): Institute of Geodesy
External Organisation(s): National Physical Laboratory (NPL)
Istituto Nazionale di Ricerca Metrologica (INRiM)
Observatoire de Paris (OBSPARIS)
National Metrology Institute of Germany (PTB)
Czech Metrology Institute (CMI)
VTT Technical Research Centre of Finland Ltd.
Type: Conference contribution
Pages: 908-911
No. of pages: 4
Publication date: 2013
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Control and Systems Engineering
Electronic version(s): https://doi.org/10.1109/EFTF-IFC.2013.6702183 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{6c837c3c59ed4b638a34cb97cabdf6f7,
title = "International Timescales with Optical Clocks (ITOC)",
abstract = "A new collaborative European project 'International timescales with optical clocks' (ITOC) aims to tackle the key challenges that must be addressed prior to a redefinition of the SI second. A coordinated programme of comparisons will be carried out between European optical clocks developed in five different laboratories, enabling their performance levels to be validated at an unprecedented level of accuracy. Supporting work will be carried out to evaluate relativistic effects that influence the comparisons, including the gravitational redshift of the clock transition frequencies. A proof-of-principle experiment will also be performed to demonstrate that optical clocks could be used to make direct measurements of the Earth's gravity potential with high temporal resolution.",
keywords = "geodesy, international timescales, optical clock, redefinition of the second, time and frequency transfer",
author = "Margolis, {H. S.} and Godun, {R. M.} and P. Gill and Johnson, {L. A.M.} and Shemar, {S. L.} and Whibberley, {P. B.} and D. Calonico and F. Levi and L. Lorini and M. Pizzocaro and P. Delva and S. Bize and J. Achkar and H. Denker and L. Timmen and C. Voigt and S. Falke and D. Piester and C. Lisdat and U. Sterr and S. Vogt and S. Weyers and J. Gersl and T. Lindvall and M. Merimaa",
note = "Copyright: Copyright 2014 Elsevier B.V., All rights reserved.; 2013 Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013 ; Conference date: 21-07-2013 Through 25-07-2013",
year = "2013",
doi = "10.1109/EFTF-IFC.2013.6702183",
language = "English",
isbn = "9781479903429",
series = "2013 Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013",
pages = "908--911",
booktitle = "2013 Joint European Frequency and Time Forum and International Frequency Control Symposium",
}