High-resolution laser-induced fluorescence spectroscopy of ${}^{28}$Si${}^{16}$O${}^{+}$ and ${}^{29}$Si${}^{16}$O${}^{+}$ in a cryogenic buffer-gas cell

Abstract

The electronic, laser-induced fluorescence spectrum of the $B^2{\Sigma }^{+}\leftarrow X^2{\Sigma }^{+}$ transition in ${}^{28}$Si${}^{16}$O${}^{+}$ and ${}^{29}$Si${}^{16}$O${}^{+}$ has been recorded in a cryogenic buffer gas cell at $\approx$ 100 K. Molecular constants are extracted for both ${}^{28}$Si${}^{16}$O${}^{+}$ and ${}^{29}$Si${}^{16}$O${}^{+}$, including the Fermi contact hyperfine constant for both the $B$ and $X$ states of ${}^{29}$Si${}^{16}$O${}^{+}$, and used in a discussion of the suitability of SiO${}^{+}$ in future quantum information experiments.

arXiv comment14 pages, 7 figures

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