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- T. L. Nicholson, S L Campbell, +9 authors Jun Ye
- Nature communications
- 2015

The pursuit of better atomic clocks has advanced many research areas, providing better quantum state control, new insights in quantum science, tighter limits on fundamental constant variation andâ€¦ (More)

- AndrÃ© Kulosa, Dominika Fim, +9 authors S. G. Porsev
- Physical review letters
- 2015

We optically excite the electronic state 3s3p ^{3}P_{0} in ^{24}Mgâ€‰â€‰ atoms, laser cooled and trapped in a magic-wavelength lattice. An applied magnetic field enhances the coupling of the light to theâ€¦ (More)

- E. Gomez, Seth Aubin, L. A. Orozco, G. D. Sprouse, Eugenia Iskrenova-Tchoukova, M. S. Safronova
- Physical review letters
- 2008

We measure the hyperfine splitting of the 9S_{1/2} level of 210Fr, and find a magnetic dipole hyperfine constant A=622.25(36) MHz. The theoretical value, obtained using the relativistic all-orderâ€¦ (More)

- M. S. Safronova, Mikhail G. Kozlov, Charles W. Clark
- Physical review letters
- 2011

We show that three group IIIB divalent ions, B(+), Al(+), and In(+), have anomalously small blackbody radiation (BBR) shifts of the ns(2) (1)S(0)-nsnp (3)P(0)(o) clock transitions. The fractional BBRâ€¦ (More)

- M. S. Safronova, S. G. Porsev, Charles W. Clark
- Physical review letters
- 2012

We evaluated the C(6) coefficients of Yb-Yb, Yb-alkali, and Yb-group II van der Waals interactions with 2% uncertainty. The only existing experimental result for such quantities is for the Yb-Ybâ€¦ (More)

- M. S. Safronova, M. G. Kozlov, Charles W. Clark
- 2011 Joint Conference of the IEEE Internationalâ€¦
- 2011

We developed a theoretical method within the framework of relativistic many-body theory to accurately treat correlation corrections in atoms with few valence electrons, and applied it to calculateâ€¦ (More)

- M. S. Safronova, Dansha Jiang, +4 authors W. R. Johnson
- IEEE Transactions on Ultrasonics, Ferroelectricsâ€¦
- 2009

A review of theoretical calculations of black-body radiation (BBR) shifts in various systems of interest to atomic clock research is presented. Calculations for monovalent systems, such as Ca+, Sr+,â€¦ (More)

- M. S. Safronova, M. G. Kozlov, C. W. Clark
- IEEE Transactions on Ultrasonics, Ferroelectricsâ€¦
- 2012

A review of recent theoretical calculations of blackbody radiation (BBR) shifts in optical atomic clocks is presented. We summarize previous results for monovalent ions that were obtained by aâ€¦ (More)

- M. S. Safronova, V. A. Dzuba, V. V. Flambaum, U. I. Safronova, S. G. Porsev, M. G. Kozlov
- Physical review letters
- 2014

We propose 10 highly charged ions as candidates for the development of next generation atomic clocks, quantum information, and search for Î± variation. They have long-lived metastable states withâ€¦ (More)

- M. S. Safronova, Dansha Jiang, M. G. Kozlov, U. I. Safronova
- 2010 IEEE International Frequency Controlâ€¦
- 2010

We developed a theoretical method within the framework of relativistic many-body theory to accurately treat correlation corrections in atoms with few valence electrons. Preliminary results forâ€¦ (More)