46 citations · 156 across the 16 of their papers we have counts for
16 papers
Theoretical calculations of isotope shifts in highly charged Ni ion
Shi-cheng Yu, Hua Guan, Lei She +1
We present relativistic many-body perturbation theory plus configuration interaction (MBPT+CI) calculations of the lowest four excited states of Ni, a promising candidate f…
A Liquid-Nitrogen-Cooled Ca+ Ion Optical Clock with a Systematic Uncertainty of 4.4E-19
Baolin Zhang, Zixiao Ma, Yao Huang +8
We report a single-ion optical clock based on the 4S_1/2-3D_5/2 transition of the 40Ca+ ion, operated in a liquid nitrogen cryogenic environment,achieving a total systematic uncert…
Coulomb Crystallization of Highly Charged Ni^12+ Ions in a Linear Paul Trap
Shaolong Chen, Zhiqiang Zhou, Guosheng Zhang +4
Optical clocks have garnered widespread attention due to their unparalleled precision in time-frequency standards, geodetic measurements, and fundamental physics research. Among em…
Direct Extraction of Nuclear Structure Information Using Precision Lithium-Ion Spectroscopy
Hua Guan, Xiao-Qiu Qi, Jian-Guo Li +14
Accurately describing nuclear interactions within atomic nuclei remains a challenge, which hinders our exploration of new physics beyond the Standard Model. However, these nuclear…
Measurement of hyperfine structure and the Zemach radius in using optical Ramsey technique
Wei Sun, Pei-Pei Zhang, Peng-peng Zhou +10
We investigate the -- () transitions in using the optical Ramsey technique and achieve the most precise values of the hyperfine spl…
Towards a transportable Ca optical clock with a systematic uncertainty of
Mengyan Zeng, Yao Huang, Baolin Zhang +8
We present a compact, long-term nearly continuous operation of a room-temperature Ca optical clock setup towards a transportable clock, achieving an overall systematic uncertai…
Absolute frequency measurements with a robust, transportable ^{40}Ca^{+} optical clock
Huaqing Zhang, Yao Huang, Baolin Zhang +9
We constructed a transportable 40Ca+ optical clock (with an estimated minimum systematic shift uncertainty of 1.3*10^(-17) and a stability of 5*10^(-15)/sqrt{tau} ) that can operat…
Precision Measurement of M1 Optical Clock Transition in Ni12+
Shaolong Chen, Zhiqiang Zhou, Jiguang Li +6
Highly charged ions (HCIs) have drawn significant interest in quantum metrology and in search for new physics. Among these, Ni12+ is considered as one of the most promising candida…
Measurement of infrared magic wavelength for an all-optical trapping of Ca ion clock
Yao Huang, Hua Guan, Chengbin Li +6
For the first time, we experimentally determine the infrared magic wavelength for the Ca electric quadrupole transit…
Highly charged Nd Ion: A potential candidate of $\upmu$Hz linewidth optical clocks for probing fundamental physics
Yan-mei Yu, Duo Pan, Shaolong Chen +3
An active optical clock based on highly charged Nd ion is proposed for the first time. The clock can offer ultra-narrow linewidth at the $\upmu$Hz-level which is more than t…
A liquid nitrogen-cooled Ca^+ optical clock with systematic uncertainty of 3*10^-18
Yao Huang, Baolin Zhang, Mengyan Zeng +6
Here we present a liquid nitrogen-cooled Ca^+ optical clock with an overall systematic uncertainty of 3*10^-18. In contrast with the room-temperature Ca^+ optical clock that we hav…
Probing Multiple Electric Dipole Forbidden Optical Transitions in Highly Charged Nickel Ions
Shi-Yong Liang, Ting-Xian Zhang, Hua Guan +13
Highly charged ions (HCIs) are promising candidates for the next generation of atomic clocks, owing to their tightly bound electron cloud, which significantly suppresses the common…
Precision calculation of hyperfine structure and the Zemach radii of Li ions
Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan +7
The hyperfine structures of the states of the Li and Li ions are investigated theoretically to extract the Zemach radii of the Li and Li nuclei…
A low-energy compact Shanghai-Wuhan electron beam ion trap for extraction of highly charged ions
Shiyong Liang, Qifeng Lu, Xincheng Wang +16
A low-energy, compact and superconducting electron beam ion trap (the Shanghai-Wuhan EBIT or SW-EBIT) for extraction of highly charged ions is presented. The magnetic field in the…
Precision Measurement of the Quadrupole Transition Matrix Element in a Single Trapped Ca
H. Shao, Y. Huang, H. Guan +3
We report the first experimental determination of the quadrupole transition matrix element in Ca by measuring t…
Measurement of magic wavelengths for the 40Ca+ clock transition
Peiliang Liu, Yao Huang, Wu Bian +6
We demonstrate experimentally the existence of magic wavelengths and determine the ratio of the oscillator strengths for a single trapped ion. For the first time, two magic wavelen…