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arXiv · 1904.10536

Frequency measurement of the $^{1}\mathrm{S}_{0}, F=5/2\leftrightarrow\,^{3}\mathrm{P}_{1}, F=7/2$ transition of $^{27}$Al$^{+}$ via quantum logic spectroscopy with $^{40}$Ca$^{+}$

Michael Guggemos·Milena Guevara-Bertsch·Daniel Heinrich·Óscar Andrey Herrera-Sancho·Yves Colombe·Rainer Blatt·Christian Felix Roos
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Abstract

We perform quantum logic spectroscopy with a $^{27}$Al$^{+}$/$^{40}$Ca$^{+}$ mixed ion crystal in a linear Paul trap for a measurement of the $(3s^{2})\,^{1}\mathrm{S}_{0} \leftrightarrow \, (3s3p)\,^{3}\mathrm{P}_{1}, F=7/2$ intercombination transition in $^{27}$Al$^{+}$. Towards this end, Ramsey spectroscopy is used for probing the transition in $^{27}$Al$^{+}$ and the $(4s^{2})\,\mathrm{S}_{1/2} \leftrightarrow \, (4s3d)\,\mathrm{D}_{5/2}$ clock transition in $^{40}$Ca$^{+}$ in interleaved measurements. By using the precisely measured frequency of the clock transition in $^{40}$Ca$^{+}$ as a frequency reference, we determine the frequency of the intercombination line to be $\nu_{^{1}\mathrm{S}_{0} \leftrightarrow \,^{3}\mathrm{P}_{1},F=7/2}$=1122 842 857 334 736(93) Hz and the Land\'e g-factor of the excited state to be $g_{^{3}\mathrm{P}_{1}, F=7/2}$=0.428132(2).

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Michael Guggemos, Milena Guevara-Bertsch, Daniel Heinrich, Óscar Andrey Herrera-Sancho, Yves Colombe, Rainer Blatt, Christian Felix Roos. 2019-04-23. Frequency measurement of the $^{1}\mathrm{S}_{0}, F=5/2\leftrightarrow\,^{3}\mathrm{P}_{1}, F=7/2$ transition of $^{27}$Al$^{+}$ via quantum logic spectroscopy with $^{40}$Ca$^{+}$. https://doi.org/10.1088/1367-2630%2Fab447a

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