Laser Cooling of Radium-225 Ions
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909263013609472 |
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| author | Ready, Roy Li, Haoran Kofford, Spencer Kwapisz, Robert Dan, Huaxu Sawhney, Akshay Fan, Mingyu Holliman, Craig Shi, Xiaoyang Sever-Walter, Luka Gaiser, A. N. Griswold, J. R. Jayich, A. M. |
| author_facet | Ready, Roy Li, Haoran Kofford, Spencer Kwapisz, Robert Dan, Huaxu Sawhney, Akshay Fan, Mingyu Holliman, Craig Shi, Xiaoyang Sever-Walter, Luka Gaiser, A. N. Griswold, J. R. Jayich, A. M. |
| contents | Radium-225 (nuclear spin $I=1/2$) ions possess electronic hyperfine transitions that are first-order insensitive to magnetic field noise, which is advantageous for optical clocks and quantum information science. We report on laser cooling and trapping of radium-225 ions and hyperfine splitting measurements of the ion's $7s$ $^2S_{1/2}$, $7p$ $^2P_{1/2}$, and $6d$ $^2D_{3/2}$ states. We measured the ground state hyperfine constant, $A(^2S_{1/2}) = -27.684511056(9)\ \mathrm{GHz}$, and the quadratic Zeeman coefficient, $C_2 = 142.3(10)\ \mathrm{Hz\ G}^{-2}$, of the $^2S_{1/2} (F=0, m_F = 0) \leftrightarrow~^2S_{1/2} (F=1, m_{F} = 0)$ transition. We also measured the hyperfine constants of the $^2P_{1/2}$ state, $A(^2P_{1/2}) = -5.447(4)\ \mathrm{GHz}$, and the $^2D_{3/2}$ state, $A(^2D_{3/2}) = -619.7(11)\ \mathrm{MHz}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_14721 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Laser Cooling of Radium-225 Ions Ready, Roy Li, Haoran Kofford, Spencer Kwapisz, Robert Dan, Huaxu Sawhney, Akshay Fan, Mingyu Holliman, Craig Shi, Xiaoyang Sever-Walter, Luka Gaiser, A. N. Griswold, J. R. Jayich, A. M. Atomic Physics Radium-225 (nuclear spin $I=1/2$) ions possess electronic hyperfine transitions that are first-order insensitive to magnetic field noise, which is advantageous for optical clocks and quantum information science. We report on laser cooling and trapping of radium-225 ions and hyperfine splitting measurements of the ion's $7s$ $^2S_{1/2}$, $7p$ $^2P_{1/2}$, and $6d$ $^2D_{3/2}$ states. We measured the ground state hyperfine constant, $A(^2S_{1/2}) = -27.684511056(9)\ \mathrm{GHz}$, and the quadratic Zeeman coefficient, $C_2 = 142.3(10)\ \mathrm{Hz\ G}^{-2}$, of the $^2S_{1/2} (F=0, m_F = 0) \leftrightarrow~^2S_{1/2} (F=1, m_{F} = 0)$ transition. We also measured the hyperfine constants of the $^2P_{1/2}$ state, $A(^2P_{1/2}) = -5.447(4)\ \mathrm{GHz}$, and the $^2D_{3/2}$ state, $A(^2D_{3/2}) = -619.7(11)\ \mathrm{MHz}$. |
| title | Laser Cooling of Radium-225 Ions |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2407.14721 |