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Cryogenic optical lattice clocks
http://hdl.handle.net/2261/57162
http://hdl.handle.net/2261/5716276815874-c473-417d-bbbb-a3512b11173f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
nphoton.2015.5_author_version.pdf (192.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2015-08-10 | |||||
| タイトル | ||||||
| タイトル | Cryogenic optical lattice clocks | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Ichiro, Ushijima
× Ichiro, Ushijima× Masao, Takamoto× Manoj, Das× Takuya, Ohkubo× Hidetoshi, Katori |
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| 著者所属 | ||||||
| 著者所属 | Quantum Metrology Laboratory, RIKEN | |||||
| 著者所属 | ||||||
| 著者所属 | Innovative Space-Time Project, ERATO, Japan Science and Technology Agency | |||||
| 著者所属 | ||||||
| 著者所属 | Department of Applied Physics, Graduate School of Engineering, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | RIKEN Center for Advanced Photonics | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The accuracy of atomic clocks relies on the superb reproducibility of atomic spectroscopy, which is accomplished by careful control and the elimination of environmental perturbations on atoms. To date, individual atomic clocks have achieved a 10−18 level of total uncertainties, but a two-clock comparison at the 10−18 level has yet to be demonstrated. Here, we demonstrate optical lattice clocks with 87Sr atoms interrogated in a cryogenic environment to address the blackbody radiation-induced frequency shift3, which remains the primary source of systematic uncertainty and has initiated vigorous theoretical and experimental investigations. The systematic uncertainty for the cryogenic clock is evaluated to be 7.2 × 10−18, which is expedited by operating two such cryo-clocks synchronously. After 11 measurements performed over a month, statistical agreement between the two cryo-clocks reached 2.0 × 10−18. Such clocks'reproducibility is a major step towards developing accurate clocks at the low 10−18 level, and is directly applicable as a means for relativistic geodesy. | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research掲載「次世代時間標準「光格子時計」の高精度化に成功」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/precise-futuristic-timekeeping-with-optical-lattice-clocks.html | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research "Precise futuristic timekeeping with optical lattice clocks" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/precise-futuristic-timekeeping-with-optical-lattice-clocks.html | |||||
| 書誌情報 |
Nature photonics 巻 9, p. 185-189, 発行日 2015-02-09 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1749-4885 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1749-4893 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12300925 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1038/nphoton.2015.5 | |||||
| 権利 | ||||||
| 権利情報 | Copyright © 2015, Rights Managed by Nature Publishing Group | |||||
| 著者版フラグ | ||||||
| 値 | author | |||||
| 出版者 | ||||||
| 出版者 | Nature Publishing Group | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/precise-futuristic-timekeeping-with-optical-lattice-clocks.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/precise-futuristic-timekeeping-with-optical-lattice-clocks.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.nature.com/nphoton/journal/vaop/ncurrent/abs/nphoton.2015.5.html | |||||
