| SPECIAL TOPIC — Advances in thorium nuclear optical clocks |
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Shortcut to adiabatic isomeric population transfer of the 229Th nucleus via hyperfine electronic bridge |
| Bo Liu(刘博)1, Wu Wang(王武)2,3,†, and Yong Li(李勇)2,‡ |
1 School of Information and Electrical Engineering, Hangzhou City University, Hangzhou 310015, China;
2 Center for Theoretical Physics & School of Physics and Optoelectronic Engineering, Hainan University, Haikou 570228, China;
3 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract The $^{229}$Th nucleus is well known for its exceptionally low-lying nuclear isomeric level, which provides a unique platform for exploring electron-nucleus interactions and gives rise to a variety of rich physical phenomena. One such phenomenon is the hyperfine electronic bridge, which has recently been shown to enable efficient and precise manipulation of the nuclear isomeric levels of $^{229}$Th [Phys. Rev. Lett. 133 223001 (2024)]. However, that study used the stimulated Raman adiabatic passage method, which requires relatively long operation times. In this work, we employ the stimulated Raman shortcut-to-adiabatic passage method, which dramatically shortens the operation time from the order of hundreds of milliseconds to hundreds of microseconds while maintaining a transfer efficiency of about 79.38%.
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Received: 20 October 2025
Revised: 03 January 2026
Accepted manuscript online: 19 January 2026
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PACS:
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42.50.-p
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(Quantum optics)
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23.20.-g
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(Electromagnetic transitions)
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23.35.+g
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(Isomer decay)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12574387, 12405026, and 12274107), the Innovation Program for Quantum Science and Technology (Grant No. 2023ZD0300704), the Funds of the Natural Science Foundation of Hangzhou (Grant No. 2024SZRYBA050001), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB0920000). |
Corresponding Authors:
Wu Wang, Yong Li
E-mail: wangwu531@hainanu.edu.cn;yongli@hainanu.edu.cn
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Cite this article:
Bo Liu(刘博), Wu Wang(王武), and Yong Li(李勇) Shortcut to adiabatic isomeric population transfer of the 229Th nucleus via hyperfine electronic bridge 2026 Chin. Phys. B 35 064201
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