Isotope-Shift Measurement of Bosonic Yb$^{+}$ Ions
Hong-Ling Yue1,2,3, Hu Shao1,3*, Zheng Chen1,2,3, Peng-Cheng Fang1,3, Meng-Yan Zeng1,2,3, Bao-Lin Zhang1,3, Yao Huang1,3, Ji-Guang Li4, Qun-Feng Chen1,3, Hua Guan1,3,7*, and Ke-Lin Gao1,3,5,6*
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy of Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China 2University of the Chinese Academy of Sciences, Beijing 100049, China 3Key Laboratory of Atomic Frequency Standards, Innovation Academy of Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China 4Institute of Applied Physics and Computational Mathematics, Beijing 100088, China 5Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China 6CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China 7Wuhan Institute of Quantum Technology, Wuhan 430206, China
Abstract：We present a method that the atomic transition frequency measurement relies on the accurate wavemeter, optical frequency comb and stable Fabry–Pérot cavity to precise determination of stable even isotope shift on single Yb$^{+}$ ion ($A=168$, 170, 172, 174, 176). The $6s$ ${}^{2}\!S_{1/2} \leftrightarrow 6p\,{}^{2}\!P_{1/2}$ and $5d\,{}^{2}\!D_{3/2} \leftrightarrow 6s\,{}^{3}[3/2]_{1/2}$ resonance dipole transition frequencies are preliminarily measured by using a wavemeter which is calibrated by the 729 nm clock laser of ${}^{40}$Ca$^{+}$. Meanwhile, those frequencies are double checked by using optical frequency comb for correction of deviation. Ultimately, by changing frequency locking points at an ultralow expansion cavity more slightly and monitoring the corresponding atomic fluorescence changing with 17%, we finally improve the resonant frequency uncertainty to $\pm 6$ MHz, which is one order of improvement in precision higher than previously published measurements on the same transitions. A King-plot analysis with sensitivity to coupling between electrons and neutrons is carried out to determine the field and mass shift constants. Our measurement combined with existing or future isotope shift measurements can be used to determine basic properties of atomic nuclei, and to test new forces beyond the Standard Model.
Kalita M R, Behr J A, Gorelov A, Pearson M R, DeHart A C, Gwinner G, Kossin M J, Orozco L A, Aubin S, Gomez E, Safronova M S, Dzuba V A, and Flambaum V V 2018 Phys. Rev. A97 042507
Counts I, Hur J, Aude C D P L, Jeon H, Leung C, Berengut J C, Geddes A, Kawasaki A, Jhe W, and Vuletić V 2020 Phys. Rev. Lett.125 123002
[16]
Hur J, Aude C D P L, Counts I, Knyazev E, Caldwell L, Leung C, Pandey S, Berengut J C, Geddes A, Nazarewicz W, Reinhard P G, Kawasaki A, Jeon H, Jhe W, and Vuletić V 2022 Phys. Rev. Lett.128 163201
2023, Vol. 40 
