International timescales with optical clocks (ITOC)

H. S. Margolis, R. M. Godun, P. Gill, L. A. M. Johnson, S. L. Shemar, P. B. Whibberley, H. Denker, L. Timmen, C. Voigt, D. Calonico, L. Lorini, M. Pizzocaro, S. Falke, D. Piester, D. Lisdat, U. Sterr, S. Weyers, P. Delva, S. Bize, J. Achkar & 3 others J. Gersl, T. Lindvall, M. Merimaa

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

17 Citations (Scopus)

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.
Original languageEnglish
Title of host publication2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC)
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages908-911
ISBN (Electronic)978-1-4799-0342-9 , 978-1-4799-0341-2
DOIs
Publication statusPublished - 2013
MoE publication typeA4 Article in a conference publication
EventJoint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013 - Prague, Czech Republic
Duration: 21 Jul 201325 Jul 2013

Conference

ConferenceJoint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013
Abbreviated titleEFTF/IFC 2013
CountryCzech Republic
CityPrague
Period21/07/1325/07/13

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clocks
International System of Units
relativistic effects
temporal resolution
gravitation
high resolution

Cite this

Margolis, H. S., Godun, R. M., Gill, P., Johnson, L. A. M., Shemar, S. L., Whibberley, P. B., ... Merimaa, M. (2013). International timescales with optical clocks (ITOC). In 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC) (pp. 908-911). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/EFTF-IFC.2013.6702183
Margolis, H. S. ; Godun, R. M. ; Gill, P. ; Johnson, L. A. M. ; Shemar, S. L. ; Whibberley, P. B. ; Denker, H. ; Timmen, L. ; Voigt, C. ; Calonico, D. ; Lorini, L. ; Pizzocaro, M. ; Falke, S. ; Piester, D. ; Lisdat, D. ; Sterr, U. ; Weyers, S. ; Delva, P. ; Bize, S. ; Achkar, J. ; Gersl, J. ; Lindvall, T. ; Merimaa, M. / International timescales with optical clocks (ITOC). 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC) . Institute of Electrical and Electronic Engineers IEEE, 2013. pp. 908-911
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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.",
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 H. Denker and L. Timmen and C. Voigt and D. Calonico and L. Lorini and M. Pizzocaro and S. Falke and D. Piester and D. Lisdat and U. Sterr and S. Weyers and P. Delva and S. Bize and J. Achkar and J. Gersl and T. Lindvall and M. Merimaa",
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Margolis, HS, Godun, RM, Gill, P, Johnson, LAM, Shemar, SL, Whibberley, PB, Denker, H, Timmen, L, Voigt, C, Calonico, D, Lorini, L, Pizzocaro, M, Falke, S, Piester, D, Lisdat, D, Sterr, U, Weyers, S, Delva, P, Bize, S, Achkar, J, Gersl, J, Lindvall, T & Merimaa, M 2013, International timescales with optical clocks (ITOC). in 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC) . Institute of Electrical and Electronic Engineers IEEE, pp. 908-911, Joint European Frequency and Time Forum and International Frequency Control Symposium, EFTF/IFC 2013, Prague, Czech Republic, 21/07/13. https://doi.org/10.1109/EFTF-IFC.2013.6702183

International timescales with optical clocks (ITOC). / Margolis, H. S.; Godun, R. M.; Gill, P.; Johnson, L. A. M.; Shemar, S. L.; Whibberley, P. B.; Denker, H.; Timmen, L.; Voigt, C.; Calonico, D.; Lorini, L.; Pizzocaro, M.; Falke, S.; Piester, D.; Lisdat, D.; Sterr, U.; Weyers, S.; Delva, P.; Bize, S.; Achkar, J.; Gersl, J.; Lindvall, T.; Merimaa, M.

2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC) . Institute of Electrical and Electronic Engineers IEEE, 2013. p. 908-911.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - International timescales with optical clocks (ITOC)

AU - Margolis, H. S.

AU - Godun, R. M.

AU - Gill, P.

AU - Johnson, L. A. M.

AU - Shemar, S. L.

AU - Whibberley, P. B.

AU - Denker, H.

AU - Timmen, L.

AU - Voigt, C.

AU - Calonico, D.

AU - Lorini, L.

AU - Pizzocaro, M.

AU - Falke, S.

AU - Piester, D.

AU - Lisdat, D.

AU - Sterr, U.

AU - Weyers, S.

AU - Delva, P.

AU - Bize, S.

AU - Achkar, J.

AU - Gersl, J.

AU - Lindvall, T.

AU - Merimaa, M.

N1 - Project code: 104525

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

U2 - 10.1109/EFTF-IFC.2013.6702183

DO - 10.1109/EFTF-IFC.2013.6702183

M3 - Conference article in proceedings

SP - 908

EP - 911

BT - 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC)

PB - Institute of Electrical and Electronic Engineers IEEE

ER -

Margolis HS, Godun RM, Gill P, Johnson LAM, Shemar SL, Whibberley PB et al. International timescales with optical clocks (ITOC). In 2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC) . Institute of Electrical and Electronic Engineers IEEE. 2013. p. 908-911 https://doi.org/10.1109/EFTF-IFC.2013.6702183