Sr lattice clock at 1×10-16 fractional uncertainty by remote optical evaluation with a Ca clock

Title:
Sr lattice clock at 1×10-16 fractional uncertainty by remote optical evaluation with a Ca clock
Authors:
Ludlow, Andrew D.; Zelevinsky, G. K.; Campbell, G. K.; Blatt, S.; Boyd, M. M.; de Miranda, Marcio H. G.; Martin, M. J.; Thomsen, J. W.; Foreman, Seth M.; Fortier, T. M.; Stalnaker, Jason E.; Diddams, S. A.; Le Coq, Y.; Barber, Zeb W.; Poli, Nicola; Lemke, Nathan D.; Beck, K. M.; Oates, C. W.; Ye, Jun
Abstract:
Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these clocks require direct comparisons between them. We have realized a high-performance remote comparison of optical clocks over kilometer-scale urban distances, a key step for development, dissemination, and application of these optical standards. Through this remote comparison and a proper design of lattice-confined neutral atoms for clock operation, we evaluate the uncertainty of a strontium (Sr) optical lattice clock at the 1 × 10–16 fractional level, surpassing the current best evaluations of cesium (Cs) primary standards. We also report on the observation of density-dependent effects in the spin-polarized fermionic sample and discuss the current limiting effect of blackbody radiation–induced frequency shifts.
Citation:
Ludlow, A. D., G. K. Zelevinsky, G. K. Campbell, S. Blatt, et al. 2008. "Sr lattice clock at 1×10–16 fractional uncertainty by remote optical evaluation with a Ca clock." Science 31(1805).
DATE ISSUED:
2008
Department:
Physics and Astronomy
Type:
article
PUBLISHED VERSION:
10.1126/science.1153341
PERMANENT LINK:
http://hdl.handle.net/11282/309394

Full metadata record

DC FieldValue Language
dc.contributor.authorLudlow, Andrew D.en_US
dc.contributor.authorZelevinsky, G. K.en_US
dc.contributor.authorCampbell, G. K.en_US
dc.contributor.authorBlatt, S.en_US
dc.contributor.authorBoyd, M. M.en_US
dc.contributor.authorde Miranda, Marcio H. G.en_US
dc.contributor.authorMartin, M. J.en_US
dc.contributor.authorThomsen, J. W.en_US
dc.contributor.authorForeman, Seth M.en_US
dc.contributor.authorFortier, T. M.en_US
dc.contributor.authorStalnaker, Jason E.en_US
dc.contributor.authorDiddams, S. A.en_US
dc.contributor.authorLe Coq, Y.en_US
dc.contributor.authorBarber, Zeb W.en_US
dc.contributor.authorPoli, Nicolaen_US
dc.contributor.authorLemke, Nathan D.en_US
dc.contributor.authorBeck, K. M.en_US
dc.contributor.authorOates, C. W.en_US
dc.contributor.authorYe, Junen_US
dc.date.accessioned2013-12-23T16:08:44Zen
dc.date.available2013-12-23T16:08:44Zen
dc.date.issued2008en
dc.identifier.citationLudlow, A. D., G. K. Zelevinsky, G. K. Campbell, S. Blatt, et al. 2008. "Sr lattice clock at 1×10–16 fractional uncertainty by remote optical evaluation with a Ca clock." Science 31(1805).en_US
dc.identifier.urihttp://hdl.handle.net/11282/309394en
dc.description.abstractOptical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these clocks require direct comparisons between them. We have realized a high-performance remote comparison of optical clocks over kilometer-scale urban distances, a key step for development, dissemination, and application of these optical standards. Through this remote comparison and a proper design of lattice-confined neutral atoms for clock operation, we evaluate the uncertainty of a strontium (Sr) optical lattice clock at the 1 × 10–16 fractional level, surpassing the current best evaluations of cesium (Cs) primary standards. We also report on the observation of density-dependent effects in the spin-polarized fermionic sample and discuss the current limiting effect of blackbody radiation–induced frequency shifts.en_US
dc.identifier.doi10.1126/science.1153341en
dc.subject.departmentPhysics and Astronomyen_US
dc.titleSr lattice clock at 1×10-16 fractional uncertainty by remote optical evaluation with a Ca clocken_US
dc.typearticleen_US
dc.identifier.journalScienceen_US
dc.identifier.volume31en_US
dc.identifier.issue1805en_US
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