Optical clocks with 1E-18 uncertainty
Public support
Provider
Ministry of Education, Youth and Sports
Programme
—
Call for proposals
—
Main participants
Český metrologický institut
Contest type
M2 - International cooperation
Contract ID
MSMT-21096/2016-7
Alternative language
Project name in Czech
Optical clocks with 1E-18 uncertainty
Annotation in Czech
1. To achieve instabilities in laser frequencies of 1 x 10-16 or below after 1 s, by investigating: (a) room temperature glass cavities, (b) cryogenic silicon cavities (c) spectral hole burning and (d) active resonators. Guidelines will be written to show how this stability can be transferred from the laser source to the atoms in optical clocks whilst adding no more than 1 x 10-17 to the laser noise after 1 s. 2. To develop traps for single ions and neutral atoms that support > 1 s probe times. Guidelines will be written for an optimised design of ion trap; for neutral atoms a report will be written summarising the effects of collisions, photon scattering and parametric heating on coherence times. 3. To evaluate and reduce systematic uncertainties in optical clocks to the level of 10-18 . A report will be written summarising improved control and measurement of the thermal environment in single ion and neutral atom optical clocks, leading to 10-18 uncertainties in blackbody radiation shifts for clocks operating at both cryogenic and room temperatures. An uncertainty report for controlling and evaluating lattice light shifts and collisional shifts at the 10-18 level in neutral atom optical lattice clocks will also be written. 4. To implement novel interrogation methods in optical clocks that use an optimised sequence of probe pulses to reduce even further the instability and inaccuracy of the clocks. To validate performance with target uncertainty 1 x 10-18, through direct measurement of the frequency difference between two independent clocks. 5. To facilitate the uptake of the technology by the measurement supply chain and end users by making optical frequency standards more practical and accessible to end users.
Scientific branches
R&D category
ZV - Basic research
CEP classification - main branch
BH - Optics, masers and lasers
CEP - secondary branch
—
CEP - another secondary branch
—
OECD FORD - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)
10306 - Optics (including laser optics and quantum optics)
Completed project evaluation
Provider evaluation
U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)
Project results evaluation
Following the condition that the candidate of financial contribution was evaluated and afterwards selected by international provider in accordance with the rules of the program the Ministry of Education, Youth ans Sports does not realize the evaluation of project results. The project is evaluated only after its approval by an international provider.
Solution timeline
Realization period - beginning
May 1, 2016
Realization period - end
Apr 30, 2019
Project status
U - Finished project
Latest support payment
Feb 12, 2019
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP20-MSM-8B-U/01:1
Data delivery date
Jun 18, 2020
Finance
Total approved costs
5,683 thou. CZK
Public financial support
2,979 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
2,704 thou. CZK