中国物理B ›› 2026, Vol. 35 ›› Issue (6): 64201-064201.doi: 10.1088/1674-1056/ae39ce

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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. 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
  • 收稿日期:2025-10-20 修回日期:2026-01-03 接受日期:2026-01-19 发布日期:2026-06-05
  • 通讯作者: Wu Wang, Yong Li E-mail:wangwu531@hainanu.edu.cn;yongli@hainanu.edu.cn
  • 基金资助:
    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).

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. 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
  • Received:2025-10-20 Revised:2026-01-03 Accepted:2026-01-19 Published:2026-06-05
  • Contact: Wu Wang, Yong Li E-mail:wangwu531@hainanu.edu.cn;yongli@hainanu.edu.cn
  • Supported by:
    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).

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摘要： 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%.

关键词: $^{229}\mathrm{Th}$ nuclear clock, isomeric state, hyperfine electronic bridge, shortcut to adiabaticity

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%.

Key words: $^{229}\mathrm{Th}$ nuclear clock, isomeric state, hyperfine electronic bridge, shortcut to adiabaticity

中图分类号:  (Quantum optics)

  • 42.50.-p
23.20.-g (Electromagnetic transitions) 23.35.+g (Isomer decay)