1. Baolin Zhang, Zixiao Ma, Yao Huang*, Huili Han, Ruming Hu,      Yuzhuo Wang, Huaqing Zhang, Liyan Tang, Tingyun Shi, Hua Guan*, Kelin      Gao*, Liquid‑nitrogen‑cooled ⁴⁰Ca⁺ ion optical clock with a systematic      uncertainty of 4.4×10⁻¹⁹, Phys. Rev. Lett. 136, 053202 (2026).

2. Hua Guan, Xiao‑Qiu Qi, Jian‑Guo Li, Peng‑Peng Zhou, Wei Sun,      Shao‑Long Chen, Xu‑Rui Chang, Yao Huang, Pei‑Pei Zhang, Zong‑Chao Yan, G.      W. F. Drake, Ai‑Xi Chen, Zhen‑Xiang Zhong, Jia‑Li Wang, Nicolas Michel,      Ting‑Yun Shi*, Kelin Gao*, Phys. Rev. A 112, L010801 (2025).

3. Shao‑Long Chen, Zhi‑qiang Zhou, Guo‑sheng Zhang, Jun Xiao, Yao      Huang, Kelin Gao*, Hua Guan*, Coulomb crystallization of highly charged      Ni¹²⁺ ions in a linear Paul trap, Phys. Rev. A 112, 063115 (2025).

4. Peng‑Peng Zhou, Shao‑Long Chen, Cheng‑Gang Qin, Xu‑Rui Chang,      Zhi‑Qiang Zhou, Wei Sun, Yao Huang, Kelin Gao*, Hua Guan*, Precise      spectroscopy of metastable Li⁺ using the optical Ramsey technique in      support of time dilation tests, Photonics Res. 13, 201 (2025).

5. Bin Wang, Yuanhang Yang, Huaqing Zhang, Ruming Hu, Haicen Mao,      Yao Huang, Kelin Gao, Hua Guan*, Design of a Board‑Level Integrated Multi‑Channel      Radio Frequency Source for the Transportable ⁴⁰Ca⁺ Ion Optical Clock, Sensors      25, 1044 (2025).

6. 马子晓，张宝林，黄垚, 高克林，管桦, 液氮低温钙离子光钟的宏运动与附加微运动研究，物理学报 74, 094204 (2025).

7. 郝艳梅，黄垚，张宝林，陈群峰, 管桦, 高克林，水平放置圆柱形参考腔振动敏感度优化设计及误差分析，量子电子学报 42, 177 (2025).

8. Y. Li, R. F. Liu, J. B. You†, W. L. Yang†, H. Guan, Optimal      performances of a quantum battery via non‑Markovian bath modulation,      Phys. Rev. E 112, 064106 (2025).

9. Shaolong Chen, Zhiqiang Zhou, Jiguang Li*, Tingxian Zhang,      Chengbin Li, Tingyun Shi, Yao Huang, Kelin Gao*, Hua Guan*, Precision      measurement of M1 optical clock transition in Ni¹²⁺, Phys. Rev. Res.      6, 013030 (2024).

10. Hu Shao, Yong‑Bo Tang*, Hong‑Ling Yue, Fang‑Fang Wu, Zixiao Ma,      Yao Huang, Liyan Tang, Hua Guan*, Kelin Gao*, Precision determination of      dipole transition elements with a single ion, Photonics Res. 12,      2242 (2024).

11. Peng‑Peng Zhou, Shao‑Long Chen, Cheng‑Gang Qin, Xu‑Rui Chang,      Zhi‑Qiang Zhou, Wei Sun, Yao Huang, Kelin Gao*, Hua Guan*, Precise      spectroscopy of metastable Li⁺ using the optical Ramsey technique in      support of time dilation tests, Photonics Res. 12, 2741 (2024).

12. Haosen Shi, Bingkun Lu, Huaqing Zhang, Ruming Hu, Yuan Qian,      Yao Huang, Tao Yang, Yuan Yao, Zhanjun Fang, Kelin Gao, Hua Guan*, Yige      Lin*, Yanyi Jiang*, Longsheng Ma, Reducing statistical noise in frequency      ratio measurement between Ca⁺ and Sr optical clocks with a frequency‑synthesized      local oscillator from a Sr optical clock, Photonics Res. 12, 2741      (2024).

13. Yao Huang, Miao Wang, Zheng Chen, Chengbin Li*, Huaqing Zhang,      Baolin Zhang, Liyan Tang, Tingyun Shi, Hua Guan*, Kelin Gao*, Measurement      of infrared magic wavelength for an all‑optical trapping of ⁴⁰Ca⁺ ion      clock, New J. Phys. 26, 043021 (2024).

14. Yanmei Hao, Ruming Hu, Baolin Zhang, Mengyan Zeng, Huaqing      Zhang, Zixiao Ma, Yao Huang*, Qunfeng Chen*, Kelin Gao*, Hua Guan*,      Stability improvement of ⁴⁰Ca⁺ optical clock by using a transportable      ultra‑stable cavity, Opt. Express 32, 4081 (2024).

15. Zheng Chen, Miao Wang, Baolin Zhang, Huaqing Zhang, Zixiao Ma,      Ruming Hu, Yao Huang*, Kelin Gao, Hua Guan, Long‑lifetime optical trapping      of a ⁴⁰Ca⁺ ion, Chin. Phys. Lett. 41, 113701 (2024).

16. 管桦，戚晓秋，陈邵龙，史庭云, 高克林, 锂离子精密光谱与核结构信息，物理学报 73, 204203 (2024).

17. 孙和平 *, 杨元喜，叶朝辉，闫昊明，管桦，彭鹏，张宝成，侯明强，程惠红，于晟，精密 (量子) 测量时代下时空基准研究中的关键科学问题和核心技术，中国科学基金 38, 172 (2024).

18. 陈正，王淼，黄垚，管桦，高克林，用于钙离子全光囚禁的离子囚禁装置研究，仪器仪表学报 45, 102 (2024).

19. 王斌，胡帅，张华青，黄垚，高克林，管桦 *, 可搬运钙离子光钟嵌入式控制系统实时性分析，光学与光电技术 22, 122‑128 (2024).

20. Wei Sun, Pei‑Pei Zhang, Peng‑Peng Zhou, Shao‑Long Chen, Zhi‑qiang      Zhou, Yao Huang, Xiao‑Qiu Qi, Zong‑Chao Yan, Ting‑Yun Shi, G. W. F. Drake,      Zhen‑Xiang Zhong, Hua Guan*, Kelin Gao*, Measurement of Hyperfine      Structure and the Zemach Radius in ⁶Li⁺ Using Optical Ramsey Technique,      Phys. Rev. Lett. 131, 103002 (2023).

21. Hu Shao, Hong‑Ling Yue, Zixiao Ma, Yao Huang, Hua Guan*, Kelin      Gao*, Precision determination of the 5d ²D₃/₂ state lifetime of single      ¹⁷⁴Yb⁺ ion, Phys. Rev. Res. 5, 023193 (2023).

22. Hong‑Ling Yue, Hu Shao*, Zheng Chen, Peng‑Cheng Fang, Meng‑Yan      Zeng, Bao‑Lin Zhang, Yao Huang, Ji‑Guang Li, Qun‑Feng Chen, Hua Guan*,      Kelin Gao*, Isotope‑Shift Measurement of Bosonic Yb⁺ Ions, Chin.      Phys. Lett. 40, 093202 (2023).

23. Mengyan Zeng, Yao Huang, Baolin Zhang, Zixiao Ma, Yanmei Hao,      Ruming Hu, Huaqing Zhang, Hua Guan*, Kelin Gao*, A cryogenic radio‑frequency      ion trap for a ⁴⁰Ca⁺ optical clock, Chin. Phys. B 32, 113701 (2023).

24. Mengyan Zeng, Zixiao Ma, Ruming Hu, Baolin Zhang, Yanmei Hao,      Huaqing Zhang, Yao Huang, Hua Guan*, Kelin Gao*, A combined magnetic field      stabilization system for improving the stability of ⁴⁰Ca⁺ optical clock,      Chin. Phys. B 32, 110704 (2023).

25. 管桦，黄垚，高克林 *, 钙离子光频标研究进展，物理 52, 449 (2023).

26. 张宝林，马子晓，黄垚，管桦 *, 高克林，锁定参数与光钟稳定度关系的研究，量子电子学报 40, 694 (2023).

27. 张华青，黄垚，张宝林，郝艳梅，管桦, 高克林, 可搬运钙离子光钟的集成化激光冷却系统，导航与控制 21, 209 (2023).

28. 黄垚，管桦，高克林，不确定度和稳定度达 10⁻¹⁸量级的钙离子光频标，计测技术 43, 116‑128 (2023).

29. Mengyan Zeng, Yao Huang, Baolin Zhang, Yanmei Hao, Zixiao Ma,      Ruming Hu, Huaqing Zhang, Zheng Chen, Miao Wang, Hua Guan, Kelin Gao,      Towards a transportable Ca⁺ optical clock with a systematic uncertainty of      4.8×10⁻¹⁸, Phys. Rev. Appl. 19, 064004 (2023).

30. 陈正，王淼，黄垚，管桦，高克林，线形离子阱杂散电场漂移的测量与优化，量子电子学报 40, 127‑132 (2023).

31. Huaqing Zhang, Yao Huang, Baolin Zhang, Yanmei Hao, Mengyan      Zeng, Qunfeng Chen, Yuzhuo Wang, Shiying Cao, Yige Lin, Zhanjun Fang, Hua      Guan, Kelin Gao, Absolute frequency measurements with a robust,      transportable ⁴⁰Ca⁺ optical clock, Metrologia 60, 035004 (2023).

32. Yao Huang, Baolin Zhang, Mengyan Zeng, Yanmei Hao, Zixiao Ma,      Huaqing Zhang, Hua Guan, Zheng Chen, Miao Wang, Kelin Gao, Liquid‑Nitrogen‑Cooled      Ca⁺ Optical Clock with Systematic Uncertainty of 3 × 10⁻¹⁸, Phys.      Rev. Appl. 17, 034041 (2022).

33. Zhiqiang Zhou, Shiyong Liang, Shaolong Chen, Pengpeng Zhou, Wei      Sun, Jun Xiao, Yao Huang, Hua Guan, Kelin Gao, Deceleration of highly      charged Ni ions with compressed longitudinal kinetic energy distribution      by a falling potential, AIP Adv. 12, 035230 (2022).

34. 黄垚，王玉琢，林弋戈，方占军，管桦，高克林，钙离子光频标钟跃迁绝对频率测量，计测技术 42, 86‑96 (2022).

35. Miao Wang, Zheng Chen, Yao Huang, Hua Guan, Kelin Gao, Setup of      a dipole trap for all‑optical trapping, Chin. Phys. B 30, 362      (2021).

36. 黄垚，管桦，高克林，高精度可搬运钙离子光钟，物理 50, 149‑154 (2021).

37. Shiyong Liang, Tingxian Zhang, Hua Guan, Qifeng Lu, Jun Xiao,      Shaolong Chen, Yao Huang, Yonghui Zhang, Chengbin Li, Yaming Zou, Jiguang      Li, Zongchao Yan, Andrei Derevianko, Mingsheng Zhan, Tingyun Shi, Kelin      Gao, Probing multiple electric‑dipole‑forbidden optical transitions in      highly charged nickel ions, Phys. Rev. A 103, 022804 (2021).

38. Yao Huang, Probing atomic and nuclear properties with precision      spectroscopy of fine and hyperfine structures in the ⁷Li⁺ ion, Phys.      Rev. A 102, 042512 (2020).

39. Baolin Zhang, Yao Huang, Huaqing Zhang, Yanmei Hao, Mengyan      Zeng, Hua Guan, Kelin Gao, Progress on the ⁴⁰Ca⁺ ion optical clock, Chin. Phys.      B 29, 074209 (2020).

40. Yao Huang, Huaqing Zhang, Baolin Zhang, Yanmei Hao, Hua Guan,      Mengyan Zeng, Qunfeng Chen, Yige Lin, Yuzhuo Wang, Shiying Cao, Kun Liang,      Zhanjun Fang, Tianchu Li, Kelin Gao, Geopotential measurement with a      robust, transportable Ca⁺ optical clock, Phys. Rev. A 102, 053107      (2020).

XiaoQiu Qi, PeiPei Zhang, ZongChao Yan, G. W. F. Drake, ZhenXiang Zhong, TingYun Shi, ShaoLong Chen, Yao Huang, Hua Guan, KeLin Gao, Precision calculation of hyperfine structure and the Zemach radii of ⁶,⁷Li⁺ ions, Phys. Rev. Lett. 125, 183002 (2020)

41. Baolin Zhang, Yao Huang, Huaqing Zhang, Yanmei Hao, Mengyan      Zeng, Hua Guan, Kelin Gao, Progress on the ⁴⁰Ca⁺ ion optical clock, Chin.      Phys. B 29, 074209 (2020).

42. Yao Huang, Improvement in the stability of a ⁴⁰Ca⁺ ion optical      clock using the Ramsey method, J. Appl. Phys. 128, 113103 (2020).

43. Yao Huang, Combined experimental and theoretical probe of the      branching fractions of the 4P₃/₂ state in ⁴⁰Ca⁺, Phys. Rev. A 100,      042511 (2019).

44. Hongfang Song, Yongbo Tang, Shaolong Chen, Lijun Du, Yao Huang,      Hua Guan, Kelin Gao, Combined experimental and theoretical probe of the      branching fractions of the 4P₃/₂ state in ⁴⁰Ca⁺, Phys. Rev. A 100,      052503 (2019).

45. 钱源，梁世勇，黄垚，管桦，高克林，基于波长计实现多路激光的长稳锁定，中国激光 46, 0201002 (2019).

46. Shaolong Chen, Shiyong Liang, Wei Sun, Yao Huang, Hua Guan,      Kelin Gao, Saturated fluorescence spectroscopy measurement apparatus based      on metastable Li⁺ beam with low energy, Rev. Sci. Instrum. 90,      043104 (2019).

47. Yuan Qian, Shiyong Liang, Yao Huang, Hua Guan, Kelin Gao, Long‑Term      Frequency Stabilization of Multi‑Lasers Based on Wavemeter, Chin. J.      Lasers 46, 0201002 (2019).

48. A. M. Hankin, E. R. Clements, Y. Huang, S. M. Brewer, J. S.      Chen, C. W. Chou, D. B. Hume, D. R. Leibrandt, Systematic uncertainty due      to background‑gas collisions in trapped‑ion optical clocks, Phys.      Rev. A 100, 032507 (2019).

49. Shiyong Liang, Qifeng Lu, Xincheng Wang, Yang Yang, Ke Yao,      Yang Shen, Baoren Wei, Jun Xiao, Shaolong Chen, Pengpeng Zhou, Wei Sun,      Yonghui Zhang, Yao Huang, Hua Guan, Xin Tong, Chengbin Li, Yaming Zou,      Tingyun Shi, Kelin Gao, A low‑energy compact Shanghai‑Wuhan electron beam      ion trap for extraction of highly charged ions, Rev. Sci. Instrum.      90, 093303 (2019).

50. Yao Huang, ⁴⁰Ca⁺ ion optical clock with micromotion‑induced      shifts below 1 × 10⁻¹⁸, Phys. Rev. A 99, 042514 (2019).

51. 管桦，黄垚，李承斌，高克林，高准确度的钙离子光频标，物理学报 67, 164202 (2018).

52. Hua Guan, Hu Shao, Yao Huang, Kelin Gao, Direct measurement of      the 3d²D₃/₂ to 3d²D₅/₂ lifetime ratio in a single trapped ⁴⁰Ca⁺, J.      Phys. B: At. Mol. Opt. Phys. 51, 045201 (2018).

53. 宋红芳，曾孟彦，黄垚，管桦，高克林，光纤耦合中的偏振匹配优化，量子电子学报 35, 374 (2018).

54. Yuan Qian, Changdaren Fang, Yao Huang, Hua Guan, Kelin Gao,      Optimization of endcap trap for single‑ion manipulation, Chin. Phys.      B 27, 063701 (2018).

55. Lijun Du, Hongfang Song, Shaolong Chen, Yao Huang, Xin Tong,      Hua Guan, Kelin Gao, Quantitative evaluation of space charge effects of      laser‑cooled three‑dimensional ion system on a secular motion period      scale, Chin. Phys. B 27, 043702 (2018).

56. Mengyan Zeng, Yao Huang, Hu Shao, Miao Wang, Huaqing Zhang,      Baolin Zhang, Hua Guan, Kelin Gao, Improvement of Stability of ⁴⁰Ca⁺      Optical Clock with State Preparation, Chin. Phys. Lett. 35, 073101      (2018).

57. Yao Huang, Precise determination of the quadrupole transition      matrix element of ⁴⁰Ca⁺ via branching‑fraction and lifetime measurements, Phys.      Rev. A 95, 042502 (2017).

58. Yao Huang, A comparison of two ⁴⁰Ca⁺ single‑ion optical      frequency standards at the 5 × 10⁻¹⁷ level and an evaluation of systematic      shifts, Appl. Phys. B 123, 210 (2017).

59. Hongfang Song, Shaolong Chen, Mengyan Zeng, Yao Huang, Hu Shao,      Yongbo Tang, Hua Guan, Kelin Gao, Relationship measurement between ac‑Stark      shift of ⁴⁰Ca⁺ clock transition and laser polarization direction, Chin.      Phys. B 26, 099501 (2017).

60. Kelin Gao, Precision measurement of the 3d ²D₃/₂‑state lifetime      in a single trapped ⁴⁰Ca⁺, Phys. Rev. A 93, 042514 (2016).

61. 黄垚，陆泽晃，管桦，高克林，离子光频标的原理和发展，物理 45, 423 (2016).

62. Wu Bian, Yao Huang, Hua Guan, Peiliang Liu, Longsheng Ma, Kelin      Gao, 1 Hz linewidth Ti:sapphire laser as local oscillator for ⁴⁰Ca⁺      optical clocks, Rev. Sci. Instrum. 87, 063104 (2016).

63. 管桦，黄垚，高克林，囚禁冷却钙离子精密光谱实验进展，中国科学：物理学      力学 天文学 59, 073005 (2016).

64. Yao Huang, Hua Guan, Peiliang Liu, Wu Bian, Longsheng Ma, Kun      Liang, Tianchu Li, Kelin Gao, Frequency Comparison of Two ⁴⁰Ca⁺ Optical      Clocks with an Uncertainty at the 10⁻¹⁷ Level, Phys. Rev. Lett. 116,      013001 (2016).

65. Hua Guan, Yao Huang, Peiliang Liu, Wu Bian, Hu Shao, Kelin Gao,      Precision spectroscopy with a single ⁴⁰Ca⁺ ion in a Paul trap, Chin.      Phys. B 24, 054213 (2015).

66. 邵虎，黄垚，谢艺，管桦，高克林，用于钙离子光频标的高性能脉冲时序产生方法，量子电子学报 32, 668 (2015).

67. Kelin Gao, Combined experimental and theoretical probe of the      lifetime of the 3d ²D₅/₂ state in ⁴⁰Ca⁺, Phys. Rev. A 91, 022504      (2015).

68. Lijun Du, Ting Chen, Hongfang Song, Shaolong Chen, Haixia Li,      Yao Huang, Xin Tong, Hua Guan, Kelin Gao, Compensating for excess      micromotion of ion crystals, Chin. Phys. B 24, 083701 (2015).

69. Ting Chen, Lijun Du, Hongfang Song, Peiliang Liu, Yao Huang,      Xin Tong, Hua Guan, Kelin Gao, Preparation of Ultracold Li⁺ Ions by      Sympathetic Cooling in a Linear Paul Trap, Chin. Phys. Lett. 32,      083701 (2015).

70. Hua Guan, Hu Shao, Yuan Qian, Yao Huang, Peiliang Liu, Wu Bian,      Chengbin Li, B. K. Sahoo, Kelin Gao, Combined experimental and theoretical      probe of the lifetime of the 3d ²D₅/₂ state in ⁴⁰Ca⁺, Phys. Rev. A      91, 022504 (2015).

71. Peiliang Liu, Yao Huang, Wu Bian, Hu Shao, Yuan Qian, Hua Guan,      Liyan Tang, Kelin Gao, Correlation between the magic wavelengths and the      polarization direction of the linearly polarized laser in the Ca⁺ optical      clock, Chin. Phys. B 24, 033702 (2015).

72. Lijun Du, Hongfang Song, Haixia Li, Shaolong Chen, Ting Chen,      Huanyao Sun, Yao Huang, Xin Tong, Hua Guan, Kelin Gao, Determination of      ion quantity by using low‑temperature ion density theory and molecular      dynamics simulation, Chin. Phys. B 24, 113702 (2015).

73. Peiliang Liu, Yao Huang, Wu Bian, Hu Shao, Hua Guan, Yongbo      Tang, Chengbin Li, J. Mitroy, Kelin Gao, Measurement of Magic Wavelengths      for the ⁴⁰Ca⁺ Clock Transition, Phys. Rev. Lett. 114, 223001 (2015).

74. Peiliang Liu, Yao Huang, Wu Bian, Hu Shao, Yuan Qian, Hua Guan,      Kelin Gao, Preliminary Frequency Comparison of Two ⁴⁰Ca⁺ Optical Frequency      Standards, Chin. Phys. Lett. 31, 113701 (2014).

75. Ting Chen, Lijun Du, Hongfang Song, Peiliang Liu, Yao Huang,      Xin Tong, Hua Guan, Kelin Gao, Determining the structural phase transition      point from the temperature of ⁴⁰Ca⁺ Coulomb crystal, Chin. Phys. B      23, 123702 (2014).

76. Yao Huang, Peiliang Liu, Wu Bian, Hua Guan, Kelin Gao,      Evaluation of the systematic shifts and absolute frequency measurement of      a single Ca⁺ ion frequency standard, Appl. Phys. B 114, 189 (2014).

77. 黄垚，⁴⁰Ca⁺离子光频标的实现及性能评估，博士学位论文，(2013).

78. Yao Huang, Jian Cao, Peiliang Liu, Kun Liang, Baoquan Ou, Hua      Guan, Xueren Huang, Tianchu Li, Kelin Gao, Hertz‑level measurement of the      ⁴⁰Ca⁺ 4s²S₁/₂–3d²D₅/₂ clock transition frequency with respect to the SI      second through the Global Positioning System, Phys. Rev. A 85,      030503 (2012).

79. Hua Guan, Qu Liu, Yao Huang, Bin Guo, Wancheng Qu, Jian Cao,      Guilong Huang, Xueren Huang, Kelin Gao, A 729 nm laser with ultra‑narrow      linewidth for probing 4s₁/₂‑3d₅/₂ clock transition of ⁴⁰Ca⁺, Opt.      Commun. 284, 217 (2011).

80. Qu Liu, Yao Huang, Jian Cao, Baoquan Ou, Bin Guo, Hua Guan,      Xueren Huang, Kelin Gao, Frequency Measurement of the Electric Quadrupole      Transition in a Single Laser‑Cooled ⁴⁰Ca⁺, Chin. Phys. Lett. 28,      013701 (2011).

81. Yao Huang, Qu Liu, Jian Cao, Baoquan Ou, Peiliang Liu, Hua      Guan, Xueren Huang, Kelin Gao, Evaluation of the systematic shifts of a      single‑⁴⁰Ca⁺‑ion frequency standard, Phys. Rev. A 84, 053841 (2011).

82. 屈万成，黄垚，管桦，黄学人，高克林，传输腔稳频的 397 nm      半导体激光器，中国激光 38, 0802008 (2011).

83. Bin Guo, Hua Guan, Qu Liu, Yao Huang, Wancheng Qu, Xueren      Huang, Kelin Gao, Preliminary frequency measurement of the electric      quadrupole transition in a single laser‑cooled ⁴⁰Ca⁺, Front. Phys.      4, 144 (2009).