Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aan5614 |
Creation of a Bose-condensed gas of Rb-87 by laser cooling | |
Hu, Jiazhong1; Urvoy, Alban; Vendeiro, Zachary; Crepel, Valentin; Chen, Wenlan; Vuletic, Vladan1 | |
2017-11-24 | |
发表期刊 | SCIENCE
![]() |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 358期号:6366页码:1078-1080 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Protocols for attaining quantum degeneracy in atomic gases almost exclusively rely on evaporative cooling, a time-consuming final step associated with substantial atom loss. We demonstrate direct laser cooling of a gas of rubidium-87 (Rb-87) atoms to quantum degeneracy. The method is fast and induces little atom loss. The atoms are trapped in a two-dimensional optical lattice that enables cycles of compression to increase the density, followed by Raman sideband cooling to decrease the temperature. From a starting number of 2000 atoms, 1400 atoms reach quantum degeneracy in 300 milliseconds, as confirmed by a bimodal velocity distribution. The method should be broadly applicable to many bosonic and fermionic species and to systems where evaporative cooling is not possible. |
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:000416590400046 |
WOS关键词 | TONKS-GIRARDEAU GAS ; OPTICAL LATTICE ; EINSTEIN CONDENSATION ; CESIUM ATOMS ; GROUND-STATE ; COLLISIONS ; SUPPRESSION ; DEGENERACY ; DENSITY ; LIGHT |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/197399 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.MIT, Dept Phys, Cambridge, MA 02139 USA; 2.MIT, Res Lab Elect, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Hu, Jiazhong,Urvoy, Alban,Vendeiro, Zachary,et al. Creation of a Bose-condensed gas of Rb-87 by laser cooling[J]. SCIENCE,2017,358(6366):1078-1080. |
APA | Hu, Jiazhong,Urvoy, Alban,Vendeiro, Zachary,Crepel, Valentin,Chen, Wenlan,&Vuletic, Vladan.(2017).Creation of a Bose-condensed gas of Rb-87 by laser cooling.SCIENCE,358(6366),1078-1080. |
MLA | Hu, Jiazhong,et al."Creation of a Bose-condensed gas of Rb-87 by laser cooling".SCIENCE 358.6366(2017):1078-1080. |
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