Experimental observation of quantum tunneling inshallow optical lattice br
文献类型：期刊论文
| 作者 | Li Ting3,4; Wang Tao1,2; Wang Ye-Bing4; Lu Ben-Quan4; Lu Xiao-Tong4; Yin Mo-Juan3,4; Chang Hong3,4
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| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2022-04-05 |
| 卷号 | 71期号:7页码:9 |
| ISSN号 | 1000-3290 |
| 关键词 | optical lattice clock transition spectrum quantum state tunneling phenomenon |
| DOI | 10.7498/aps.71.20212038 |
| 英文摘要 | For a one-dimensional optical lattice clock built in the horizontal direction, when the stability and uncertainty of the system reach the order of 10-18 or more, the clock frequency shift caused by the quantum tunneling effect becomes not negligible. In the shallow optical lattice, the quantum tunneling effect will cause the clock transition spectrum to be significantly broadened. So, in this paper the quantum tunneling phenomenon in the shallow optical lattice is studied, laying a foundation for the evaluation of uncertainty of87Sr atomic optical lattice clock system. In this experiment, on the platform of one-dimensional 87Sr atomic optical lattice clock, the narrow-linewidth 1S0()-> 3P0() transition (that is, the clock transition) is excited by an ultra-stable and ultra-narrow linewidth 698 nm laser, and the distribution of strontium atoms in a specific quantum state is prepared. In the deep optical lattice, after the cold 87Sr atoms in preparation reach a state, the lattice depth of the optical lattice is adiabatically reduced. Then, the carrier-sideband resolved clock transition spectral line is detected in the shallow optical lattice. The obvious splitting of the carrier spectral line is observed from the clock transition spectral line, which indicates that the strontium atom has an obvious quantum tunneling phenomenon between the adjacent lattice sites of the optical lattice. In addition, when the lattice potential lattice depth is reduced, owing to the incommensurability of lattice light wavelength (813 nm)and clock laser wavelength (698 nm), the tunneling of atoms between adjacent lattice points will lead to spin-orbit coupling effect. Owing to the exceptionally long lifetime (120(3) s) of 3P0 state, it can not only suppress the decoherence, but also reduce the atomic loss rate caused by spontaneous emission. This has a natural advantage for studying the spin-orbit coupling of fermions. Therefore, the understanding of quantum tunneling mechanism in optical lattice is not only conducive to improving the uncertainty of the 87Sr atomic optical lattice clock, but also lays the foundation for observing the spin-orbit coupling effect of fermions on this platform |
| WOS关键词 | CLOCK ; FERMIONS |
| 资助项目 | National Natural Science Foundation of China[11803042] ; National Natural Science Foundation of China[61775220] ; Youth Innovation Promotion Association the Chinese Academy of Sciences[2019400] ; Special Foundation for Theoretical Physics Research Program of China[11647165] ; China Postdoctoral Science Foundation Funded Project[2020M673118] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000790960700006 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Special Foundation for Theoretical Physics Research Program of China ; Special Foundation for Theoretical Physics Research Program of China ; China Postdoctoral Science Foundation Funded Project ; China Postdoctoral Science Foundation Funded Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Special Foundation for Theoretical Physics Research Program of China ; Special Foundation for Theoretical Physics Research Program of China ; China Postdoctoral Science Foundation Funded Project ; China Postdoctoral Science Foundation Funded Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Special Foundation for Theoretical Physics Research Program of China ; Special Foundation for Theoretical Physics Research Program of China ; China Postdoctoral Science Foundation Funded Project ; China Postdoctoral Science Foundation Funded Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Youth Innovation Promotion Association the Chinese Academy of Sciences ; Special Foundation for Theoretical Physics Research Program of China ; Special Foundation for Theoretical Physics Research Program of China ; China Postdoctoral Science Foundation Funded Project ; China Postdoctoral Science Foundation Funded Project |
| 源URL | [http://210.72.145.45/handle/361003/13826]  |
| 专题 | 国家授时中心_量子频标研究室 |
| 通讯作者 | Wang Tao; Chang Hong |
| 作者单位 | 1.Chongqing Key Lab Strongly Coupled Phys, Chongqing 401331, Peoples R China 2.Chongqing Univ, Coll Phys, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Natl Time Serv Ctr, Xian 710600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Ting,Wang Tao,Wang Ye-Bing,et al. Experimental observation of quantum tunneling inshallow optical lattice br[J]. ACTA PHYSICA SINICA,2022,71(7):9. |
| APA | Li Ting.,Wang Tao.,Wang Ye-Bing.,Lu Ben-Quan.,Lu Xiao-Tong.,...&Chang Hong.(2022).Experimental observation of quantum tunneling inshallow optical lattice br.ACTA PHYSICA SINICA,71(7),9. |
| MLA | Li Ting,et al."Experimental observation of quantum tunneling inshallow optical lattice br".ACTA PHYSICA SINICA 71.7(2022):9. |
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来源：国家授时中心
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