Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aay6428 |
Probing gravity by holding atoms for 20 seconds | |
Xu, Victoria1; Jaffe, Matt1; Panda, Cristian D.1; Kristensen, Sofus L.1,2; Clark, Logan W.1,3,4; Mueller, Holger1 | |
2019-11-08 | |
发表期刊 | SCIENCE
![]() |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 366期号:6466页码:745-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark |
英文摘要 | Atom interferometers are powerful tools for both measurements in fundamental physics and inertial sensing applications. Their performance, however, has been limited by the available interrogation time of freely falling atoms in a gravitational field. By suspending the spatially separated atomic wave packets in a lattice formed by the mode of an optical cavity, we realize an interrogation time of 20 seconds. Our approach allows gravitational potentials to be measured by holding, rather than dropping, atoms. After seconds of hold time, gravitational potential energy differences from as little as micrometers of vertical separation generate megaradians of interferometer phase. This trapped geometry suppresses the phase variance due to vibrations by three to four orders of magnitude, overcoming the dominant noise source in atom-interferometric gravimeters. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496500400051 |
WOS关键词 | PRECISION-MEASUREMENT ; BLOCH OSCILLATIONS ; INTERFEROMETRY ; ACCELERATION ; CONSTANT |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/226186 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; 2.Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark; 3.Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA; 4.Univ Chicago, Dept Phys, Chicago, IL 60637 USA |
推荐引用方式 GB/T 7714 | Xu, Victoria,Jaffe, Matt,Panda, Cristian D.,et al. Probing gravity by holding atoms for 20 seconds[J]. SCIENCE,2019,366(6466):745-+. |
APA | Xu, Victoria,Jaffe, Matt,Panda, Cristian D.,Kristensen, Sofus L.,Clark, Logan W.,&Mueller, Holger.(2019).Probing gravity by holding atoms for 20 seconds.SCIENCE,366(6466),745-+. |
MLA | Xu, Victoria,et al."Probing gravity by holding atoms for 20 seconds".SCIENCE 366.6466(2019):745-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论