Part-per-billion measurement of the $4{\phantom{\rule{0.16em}{0ex}}}^{2}{S}_{1/2}\ensuremath{\rightarrow}3{\phantom{\rule{0.16em}{0ex}}}^{2}{D}_{5/2}$ electric-quadrupole-transition isotope shifts between $^{42,44,48}\mathrm{Ca}^{+}$ and $^{40}\mathrm{Ca}^{+}$

Part-per-billion measurement of the $4^{2} S_{1 / 2} \to 3^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 100, 022514 – Published 26 August 2019; Erratum Phys. Rev. A 107, 069902 (2023)

Abstract

We report a precise measurement of the isotope shifts in the $4^{2} S_{1 / 2} \to 3^{2} D_{5 / 2}$ electric quadrupole transition at 729 nm in ${}^{40 - 42, 44, 48}{Ca}^{+}$ . The measurement has been made via high-resolution laser spectroscopy of co-trapped ions, finding measured shifts of 2 771 872 467.6(7.6), 5 340 887 394.6(7.8), and 9 990 381 870.0(6.3) Hz between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$ , respectively. By exciting the two isotopes simultaneously, using frequency sidebands derived from a single laser, systematic uncertainties resulting from laser frequency drifts are eliminated. This permits far greater precision than similar previously published measurements in other alkaline-earth-metal systems. The resulting measurement accuracy provides a benchmark for tests of theoretical isotope shift calculations and also offers a step towards probing new physics via isotope shift spectroscopy.

Received 10 June 2019

DOI:https://doi.org/10.1103/PhysRevA.100.022514

Physics Subject Headings (PhySH)

Atomic & molecular structure

Atomic, Molecular & Optical

Erratum

Erratum: Part-per-billion measurement of the 4 $^{2} S_{1 / 2} \to 3$ $^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$ [Phys. Rev. A 100, 022514 (2019)]

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 107, 069902 (2023)

Authors & Affiliations

Felix W. Knollmann¹, Ashay N. Patel^1,2, and S. Charles Doret ^1,*

¹Department of Physics, Williams College, Williamstown, Massachusetts 01267, USA
²Division of Physics, Mathematics and Astronomy, Caltech, Pasadena, California 91125, USA

^*scd2@williams.edu

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Vol. 100, Iss. 2 — August 2019

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Physical Review A

covering atomic, molecular, and optical physics and quantum information

Part-per-billion measurement of the $4^{2} S_{1 / 2} \to 3^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 100, 022514 – Published 26 August 2019; Erratum Phys. Rev. A 107, 069902 (2023)

Abstract

Physics Subject Headings (PhySH)

Erratum

Erratum: Part-per-billion measurement of the 4 $^{2} S_{1 / 2} \to 3$ $^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$ [Phys. Rev. A 100, 022514 (2019)]

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 107, 069902 (2023)

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Physical Review A

covering atomic, molecular, and optical physics and quantum information

Part-per-billion measurement of the 42S1/2→32D5/2 electric-quadrupole-transition isotope shifts between Ca+42,44,48 and Ca+40

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 100, 022514 – Published 26 August 2019; Erratum Phys. Rev. A 107, 069902 (2023)

Abstract

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Erratum

Erratum: Part-per-billion measurement of the 4 2S1/2→3 2D5/2 electric-quadrupole-transition isotope shifts between Ca+42,44,48 and Ca+40 [Phys. Rev. A 100, 022514 (2019)]

Felix W. Knollmann, Ashay N. Patel, and S. Charles Doret

Phys. Rev. A 107, 069902 (2023)

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Part-per-billion measurement of the $4^{2} S_{1 / 2} \to 3^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$

Erratum: Part-per-billion measurement of the 4 $^{2} S_{1 / 2} \to 3$ $^{2} D_{5 / 2}$ electric-quadrupole-transition isotope shifts between ${}^{42, 44, 48}{Ca}^{+}$ and ${}^{40}{Ca}^{+}$ [Phys. Rev. A 100, 022514 (2019)]