Zobrazeno 1 - 10
of 41
pro vyhledávání: '"R. Kaewuam"'
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
There is a continuous effort to improve the accuracy of atomic clocks. Here the authors measure the static differential scalar polarizability of Lutetium ion resonant transitions and its lower light shift from blackbody radiation makes it a promising
Externí odkaz:
https://doaj.org/article/e3058a95bbf0495691c75c155fb2847d
Publikováno v:
Physical Review A. 102
We consider hyperfine-mediated effects for clock transitions in $^{176}\mathrm{Lu}^{+}$. Mixing of fine-structure levels due to the hyperfine interaction brings about modifications to the Land\'e $g$-factors and the quadrupole moment for a given stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86369271d32d48519a8938cac917744c
https://doi.org/10.1103/physreva.102.052834
https://doi.org/10.1103/physreva.102.052834
Autor:
K. J. Arnold, Marianna Safronova, Ting Rei Tan, Zhiqiang Zhang, R. Kaewuam, Murray D. Barrett
Publikováno v:
Physical Review A. 102
Precision measurements of the ${\mathrm{Lu}}^{+}\phantom{\rule{4pt}{0ex}}^{3}D_{1}$ and $^{3}D_{2}$ quadrupole moments have been carried out giving $\mathrm{\ensuremath{\Theta}}(^{3}D_{1})=0.63862(74)e{a}_{0}^{2}$ and $\mathrm{\ensuremath{\Theta}}(^{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61ecc2e590bccb6051a21199879fbe36
https://doi.org/10.1103/physreva.102.042819
https://doi.org/10.1103/physreva.102.042819
Autor:
Sapam Ranjita Chanu, Murray D. Barrett, R. Kaewuam, K. J. Arnold, Marianna Safronova, Zhiqiang Zhang
Publikováno v:
Physical Review A. 101
Branching fractions for decays from the ${P}_{3/2}$ level in $^{138}\mathrm{Ba}^{+}$ have been measured with a single laser-cooled ion. Decay probabilities to ${S}_{1/2}$, ${D}_{3/2}$, and ${D}_{5/2}$ are determined to be 0.741716(71), 0.028031(23),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9b7f1eb4c3d53a9f6cd5d0ae638cb47
https://doi.org/10.1103/physreva.101.062515
https://doi.org/10.1103/physreva.101.062515
Autor:
K. J. Arnold, Ting Rei Tan, R. Kaewuam, Murray D. Barrett, Zhiqiang Zhang, Sapam Ranjita Chanu
Publikováno v:
Physical Review Letters. 124
Measurement of the $^{138}{\mathrm{Ba}}^{+}$ ${^{2}S}_{1/2}\ensuremath{-}{^{2}D}_{5/2}$ clock transition frequency and ${D}_{5/2}$ Land\'e ${g}_{J}$ factor are reported. The clock transition frequency ${\ensuremath{\nu}}_{{\mathrm{Ba}}^{+}}=170126432
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::274c0cf2cf33f29047fbd2f59d535f71
https://doi.org/10.1103/physrevlett.124.193001
https://doi.org/10.1103/physrevlett.124.193001
Autor:
K. J. Arnold, Ting Rei Tan, Zhiqiang Zhang, R. Kaewuam, Marianna Safronova, V. P. W. Koh, Murray D. Barrett, Sapam Ranjita Chanu
Publikováno v:
Physical Review A. 101
The zero crossing of the dynamic differential scalar polarizability of the ${S}_{1/2}\ensuremath{-}{D}_{5/2}$ clock transition in $^{138}\mathrm{Ba}^{+}$ has been determined to be $459.1614(28)\phantom{\rule{0.28em}{0ex}}\mathrm{THz}$. Together with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da71b7833dff4188a098fb6cae2635c1
https://doi.org/10.1103/physreva.101.042507
https://doi.org/10.1103/physreva.101.042507
Autor:
K. J. Arnold, Sapam Ranjita Chanu, Zhiqiang Zhang, Murray D. Barrett, Ting Rei Tan, R. Kaewuam
Publikováno v:
Physical review letters. 124(8)
We propose and experimentally demonstrate a scheme which effects hyperfine averaging during a Ramsey interrogation of a clock transition. The method eliminates the need to average over multiple optical transitions, reduces the sensitivity of the cloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b59c0fb8a55bb93c3f22798114735ce7
https://pubmed.ncbi.nlm.nih.gov/32167337
https://pubmed.ncbi.nlm.nih.gov/32167337
Autor:
Murray D. Barrett, Zhiqiang Zhang, Marianna Safronova, K. J. Arnold, Sapam Ranjita Chanu, Ting Rei Tan, L. Yeo, R. Kaewuam
Publikováno v:
Physical Review A. 100
Measurement of the branching ratios for $6{P}_{1/2}$ decays to $6{S}_{1/2}$ and $5{D}_{3/2}$ in $^{138}\mathrm{Ba}^{+}$ are reported with the decay probability from $6{P}_{1/2}$ to $5{D}_{3/2}$ measured to be $p=0.268177\ifmmode\pm\else\textpm\fi{}{(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16fa29a16aa937a36cec58e2a5765ef7
https://doi.org/10.1103/physreva.100.032503
https://doi.org/10.1103/physreva.100.032503
Publikováno v:
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC).
A definition of a frequency standard that utilizes multiple clock transitions within a single atom is considered. Under experimentally achievable conditions, it is shown that the operating conditions of the system can be constrained by the definition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11cdac84ea8f3f46c02af8942a3432c0
https://doi.org/10.1109/fcs.2019.8856138
https://doi.org/10.1109/fcs.2019.8856138
Publikováno v:
Physical Review A. 99
High-precision spectroscopy of the ${}^{1}{S}_{0}{\text{\ensuremath{-}}}^{1}{D}_{2}$ clock transition of $^{176}\mathrm{Lu}^{+}$ is reported. Measurements are performed with Hertz level precision with the accuracy of the hyperfine-averaged frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c848c78b734c0c9a3a9c93dcd56c949c
https://doi.org/10.1103/physreva.99.022514
https://doi.org/10.1103/physreva.99.022514