This file was created by the TYPO3 extension bib --- Timezone: CEST Creation date: 2024-04-26 Creation time: 08-48-54 --- Number of references 5 article Guidelines for developing optical clocks with 10<sup>−18</sup> fractional frequency uncertainty 2019 6 27 10.15488/5553 M.Abdel-Hafiz P.Ablewski A.Al-Masoudi H.Alvarez Martinez P.Balling G.Barwood E.Benkler M.Bober M.Borkowski W.Bowden R.Ciuryło H.Cybulski A.Didier M.Doležal S.Dörscher S.Falke R. M.Godun R.Hamid I. R.Hill R.Hobson N.Huntemann Y.Le Coq R.Le Targat T.Legero T.Lindvall Ch.Lisdat J.Lodewyck H. S.Margolis T. E.Mehlstäubler E.Peik L.Pelzer M.Pizzocaro B.Rauf A.Rolland N.Scharnhorst M.Schioppo P. O.Schmidt R.Schwarz C.Senel N.Spethmann U.Sterr Chr.Tamm J. W.Thomsen A.Vianello M.Zawada article Combined error signal in Ramsey spectroscopy of clock transitions New J. Phys. 2018 28 20 123016 10.1088/1367-2630/aaf47c V. I.Yudin A. V.Taichenachev M. Yu.Basalaev T.Zanon-Willette T. E.Mehlstäubler J.Pollock M.Shuker E. A.Donley J.Kitching article Structural phase transitions and topological defects in ion Coulomb crystals Physica B 2015 460 114-118 10.1016/j.physb.2014.11.051 H.L.Partner A. delCampo W.H.Zurek A.Retzker M. B.Plenio KarstenPyka J.Keller T.Burgermeister R.Nigmatullin T. E.Mehlstäubler article PykaCZPRKMBNPKM2013 Topological defect formation and spontaneous symmetry breaking in ion Coulomb crystals Nat. Commun. 2013 8 4 2291 http://arxiv.org/abs/1211.7005 10.1038/ncomms3291 KarstenPyka J.Keller H.L.Partner R.Nigmatullin T.Burgermeister David-MarcelMeier KristijanKuhlmann A.Retzker M. B.Plenio W.H.Zurek A. delCampo T. E.Mehlstäubler article GrossmanFMOPSZ2000 Energies and hyperfine splittings of the 7D levels of atomic francium Phys. Rev. A 2000 62 5 052507 http://www.quantummetrology.de/quest/fileadmin/quest/multi_ion_clocks/Publications/2001_Grossmann_PhysRevA.pdf 10.1103/PhysRevA.62.052507 J.M.Grossman R.P.Fliller T. E.Mehlstäubler L.A.Orozco M.R.Pearson G.D.Sprouse W.Z.Zhao