Recent progress on quantum frequency standards at BIRMM
Quantum frequency standards are crucial for time measurement, satellite navigation, telecommunication, and other essential applications. Beijing Institute of Radio Metrology and Measurement (BIRMM) has been working on quantum frequency standards and their applications for tens of years. This paper i...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.971036/full |
| _version_ | 1811254593268482048 |
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| author | Xiaobo Xue Tiezhong Zhou Nuanrang Wang Shengkang Zhang Jun Ge |
| author_facet | Xiaobo Xue Tiezhong Zhou Nuanrang Wang Shengkang Zhang Jun Ge |
| author_sort | Xiaobo Xue |
| collection | DOAJ |
| description | Quantum frequency standards are crucial for time measurement, satellite navigation, telecommunication, and other essential applications. Beijing Institute of Radio Metrology and Measurement (BIRMM) has been working on quantum frequency standards and their applications for tens of years. This paper introduces the latest progress on quantum frequency standards at BIRMM, including a calcium optical clock, an active hydrogen maser, and a mercury ion microwave clock. Based on the 1S0-3P1 transition of calcium atoms, a transportable optical clock prototype is built with a stability of 8 × 10–15 at 1 s. A compact active hydrogen maser has been developed for the Chinese space station. It will be used for scientific research such as examining Einstein’s theory of general relativity and has just been lunched. The preliminary frequency stability of the maser is 1.27 × 10–15 at 10000 s. Additionally, a prototype mercury ion microwave clock is developed using the hyperfine transition between 62S1/2, F = 0 and 62S1/2, F = 1. The trapped Hg+ ions are pumped by mercury discharge lamps and cooled by Helium gas. The measured clock transition linewidth is about 1 Hz, and frequency stability of 4 × 10–13 at 1 s and 4 × 10–14 at 1000 s is achieved. |
| first_indexed | 2024-04-12T17:09:53Z |
| format | Article |
| id | doaj.art-193afc727aa14eb593369b0ba2d89cd8 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-12T17:09:53Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Physics |
| spelling | doaj.art-193afc727aa14eb593369b0ba2d89cd82022-12-22T03:23:49ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-09-011010.3389/fphy.2022.971036971036Recent progress on quantum frequency standards at BIRMMXiaobo XueTiezhong ZhouNuanrang WangShengkang ZhangJun GeQuantum frequency standards are crucial for time measurement, satellite navigation, telecommunication, and other essential applications. Beijing Institute of Radio Metrology and Measurement (BIRMM) has been working on quantum frequency standards and their applications for tens of years. This paper introduces the latest progress on quantum frequency standards at BIRMM, including a calcium optical clock, an active hydrogen maser, and a mercury ion microwave clock. Based on the 1S0-3P1 transition of calcium atoms, a transportable optical clock prototype is built with a stability of 8 × 10–15 at 1 s. A compact active hydrogen maser has been developed for the Chinese space station. It will be used for scientific research such as examining Einstein’s theory of general relativity and has just been lunched. The preliminary frequency stability of the maser is 1.27 × 10–15 at 10000 s. Additionally, a prototype mercury ion microwave clock is developed using the hyperfine transition between 62S1/2, F = 0 and 62S1/2, F = 1. The trapped Hg+ ions are pumped by mercury discharge lamps and cooled by Helium gas. The measured clock transition linewidth is about 1 Hz, and frequency stability of 4 × 10–13 at 1 s and 4 × 10–14 at 1000 s is achieved.https://www.frontiersin.org/articles/10.3389/fphy.2022.971036/fulltime and frequency metrologypositioning navigation and timingquantum frequency standardoptical clockactive hydrogen maserion microwave clock |
| spellingShingle | Xiaobo Xue Tiezhong Zhou Nuanrang Wang Shengkang Zhang Jun Ge Recent progress on quantum frequency standards at BIRMM Frontiers in Physics time and frequency metrology positioning navigation and timing quantum frequency standard optical clock active hydrogen maser ion microwave clock |
| title | Recent progress on quantum frequency standards at BIRMM |
| title_full | Recent progress on quantum frequency standards at BIRMM |
| title_fullStr | Recent progress on quantum frequency standards at BIRMM |
| title_full_unstemmed | Recent progress on quantum frequency standards at BIRMM |
| title_short | Recent progress on quantum frequency standards at BIRMM |
| title_sort | recent progress on quantum frequency standards at birmm |
| topic | time and frequency metrology positioning navigation and timing quantum frequency standard optical clock active hydrogen maser ion microwave clock |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.971036/full |
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