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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.19182 |
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| _version_ | 1866908339961593856 |
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| author | Chen, Shaolong Zhou, Zhiqiang Zhang, Guosheng Xiao, Jun Huang, Yao Gao, Kelin Guan, Hua |
| author_facet | Chen, Shaolong Zhou, Zhiqiang Zhang, Guosheng Xiao, Jun Huang, Yao Gao, Kelin Guan, Hua |
| contents | Optical clocks have garnered widespread attention due to their unparalleled precision in time-frequency standards, geodetic measurements, and fundamental physics research. Among emerging developments, highly charged ion (HCI)-based optical clocks have attracted significant scientific interest owing to their exceptional resilience against electromagnetic perturbations and enhanced sensitivity to variations in the fine-structure constant ($α$). While the recent successful demonstration of an Ar$^{13+}$ optical clock has validated the feasibility of HCI-based systems, Ni$^{12+}$ -- featuring an ultranarrow clock transition linewidth -- stands out as a superior candidate for achieving HCI optical clocks with $10^{-19}$ level uncertainty and stability. In this work, we report the Coulomb crystallization of nickel highly charged ions (Ni-HCIs). Through a precision deceleration and sympathetic cooling protocol in a room-temperature Paul trap, high-energy Ni-HCI bunches were sympathetically cooled from megakelvin to the 100-millikelvin range using laser-cooled Be$^{+}$ ions. This work represents a pivotal step toward the realization of an optical clock based on the Ni$^{12+}$ ion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_19182 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coulomb Crystallization of Highly Charged Ni^12+ Ions in a Linear Paul Trap Chen, Shaolong Zhou, Zhiqiang Zhang, Guosheng Xiao, Jun Huang, Yao Gao, Kelin Guan, Hua Atomic Physics Optical clocks have garnered widespread attention due to their unparalleled precision in time-frequency standards, geodetic measurements, and fundamental physics research. Among emerging developments, highly charged ion (HCI)-based optical clocks have attracted significant scientific interest owing to their exceptional resilience against electromagnetic perturbations and enhanced sensitivity to variations in the fine-structure constant ($α$). While the recent successful demonstration of an Ar$^{13+}$ optical clock has validated the feasibility of HCI-based systems, Ni$^{12+}$ -- featuring an ultranarrow clock transition linewidth -- stands out as a superior candidate for achieving HCI optical clocks with $10^{-19}$ level uncertainty and stability. In this work, we report the Coulomb crystallization of nickel highly charged ions (Ni-HCIs). Through a precision deceleration and sympathetic cooling protocol in a room-temperature Paul trap, high-energy Ni-HCI bunches were sympathetically cooled from megakelvin to the 100-millikelvin range using laser-cooled Be$^{+}$ ions. This work represents a pivotal step toward the realization of an optical clock based on the Ni$^{12+}$ ion. |
| title | Coulomb Crystallization of Highly Charged Ni^12+ Ions in a Linear Paul Trap |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2504.19182 |