Final publishable report - 18SIB05 - ROCIT - Robust Optical Clocks for International Timescales

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F23%3AN0000004" target="_blank" >RIV/00177016:_____/23:N0000004 - isvavai.cz</a>

Výsledek na webu

<a href="http://empir.npl.co.uk/rocit/wp-content/uploads/sites/52/2023/02/18SIB05-ROCIT-Final_Publishable_Report.pdf" target="_blank" >http://empir.npl.co.uk/rocit/wp-content/uploads/sites/52/2023/02/18SIB05-ROCIT-Final_Publishable_Report.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Final publishable report - 18SIB05 - ROCIT - Robust Optical Clocks for International Timescales

Popis výsledku v původním jazyce

Optical atomic clocks have now reached levels of performance that clearly surpass the stability and accuracy achievable with caesium microwave primary frequency standards, with the result that a future optical redefinition of the SI second is anticipated. This project tackled key steps that must be taken prior to the redefinition. The robustness of optical clocks was improved so that they could run unattended for long periods, methods were developed for automatic data validation enabling prototype demonstrations of optically steered timescales, and the long-term reliability and reproducibility of the clocks were assessed through a coordinated programme of international comparisons. By the end of the project several European optical clocks were contributing on a regular basis to International Atomic Time (TAI) as secondary representations of the second, improving its stability and accuracy. These steps represent important progress towards the criteria set out in the international roadmap towards a redefinition of the second, and since international timescales underpin modern-day technology such as telecommunications and navigation systems, the work will benefit end users across a wide range of sectors in the longer term.

Název v anglickém jazyce

Final publishable report - 18SIB05 - ROCIT - Robust Optical Clocks for International Timescales

Popis výsledku anglicky

Optical atomic clocks have now reached levels of performance that clearly surpass the stability and accuracy achievable with caesium microwave primary frequency standards, with the result that a future optical redefinition of the SI second is anticipated. This project tackled key steps that must be taken prior to the redefinition. The robustness of optical clocks was improved so that they could run unattended for long periods, methods were developed for automatic data validation enabling prototype demonstrations of optically steered timescales, and the long-term reliability and reproducibility of the clocks were assessed through a coordinated programme of international comparisons. By the end of the project several European optical clocks were contributing on a regular basis to International Atomic Time (TAI) as secondary representations of the second, improving its stability and accuracy. These steps represent important progress towards the criteria set out in the international roadmap towards a redefinition of the second, and since international timescales underpin modern-day technology such as telecommunications and navigation systems, the work will benefit end users across a wide range of sectors in the longer term.

Druh

V_souhrn - Souhrnná výzkumná zpráva

CEP obor

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OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/8B19008" target="_blank" >8B19008: Robust Optical Clocks for International Timescales</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Počet stran výsledku

23

Místo vydání

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Název nakladatele resp. objednatele

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Verze

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