Control of the systematic shifts of the strontium ion optical frequency standard at the 10 mHz level

DOIResolve DOI: http://doi.org/10.1109/EFTF-IFC.2013.6702065
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TypeArticle
Proceedings title2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC)
Conference2013 Joint European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), July 21-25 2013, Prague, Czech Republic
ISBN978-1-4799-0342-9
Pages521524
SubjectBlackbody radiation; Frequency standards; Measurment uncertainty; Microwave measurement; Strontium; Trapped ions
AbstractAn overview of the key methods used to reduce the uncertainty of the systematic shifts of the strontium ion optical frequency standard is presented. An uncertainty of 10 mHz at a clock frequency of 445 THz is obtained, limited by the uncertainty of the blackbody radiation shift. The uncertainty estimates of other shifts such as micromotion and electric quadrupole shifts are on the order of 1 mHz or less. The effectiveness of the methods used to reduce or cancel the shifts is illustrated with experiments comparing two ion traps. One has strong micromotion levels while the other, the reference trap, provides good control over the shifts. Despite nominal shifts of 70 Hz in the trap with large micromotion levels, the agreement with the reference trap is at the sub-Hz level.
Publication date
PublisherIEEE
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number23000493
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Record identifier8c57d872-ca7d-4fc9-b410-14927f5cf574
Record created2016-07-26
Record modified2016-07-26
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