Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice
文献类型：期刊论文
| 作者 | Wang, Xiaorui1,2; Tan, Xinzhou1,2; Yang, Lu1,2; Xiong, Hongwei1; Lue, Baolong1 |
| 刊名 | JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 23期号:5页码:689-691 |
| 关键词 | Phase transition Superfluidity Optical lattice Normal gas |
| 产权排序 | 第一 |
| 英文摘要 | We experimentally study the phase transition of (87)Rb Bose-Einstein condensates adiabatically loaded to a combined trap or a 1D optical lattice and a magnetic trap. The phase coherence property of this system is probed by recording the interference pattern of the expanded atomic cloud suddenly released from the combined trap. We show that as the temperature is sufficiently low (below the critical temperature T(C)), an interference pattern has a "peak on a peak" feature which is a true signature of macroscopic superfluid states. The normal gas only contributes to the broad background and three wide peaks in an interference pattern. These observations qualitatively agree with the recent theoretical predictions (Diener et al. in Phys. Rev. Lett. 98:180404, 2007; Kato et al. in Nat. Phys. 4:617, 2008). We also computed both the critical temperature and the interference pattern for a practical combined trap as ours in the tight-binding limit, and the numerical results are consistent with our experimental observations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 原子分子物理学 |
| 类目[WOS] | Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | MOTT INSULATOR ; ATOMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000278546800026 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1976]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaorui,Tan, Xinzhou,Yang, Lu,et al. Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice[J]. JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,2010,23(5):689-691. |
| APA | Wang, Xiaorui,Tan, Xinzhou,Yang, Lu,Xiong, Hongwei,&Lue, Baolong.(2010).Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice.JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM,23(5),689-691. |
| MLA | Wang, Xiaorui,et al."Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice".JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM 23.5(2010):689-691. |
入库方式： OAI收割
来源：武汉物理与数学研究所
浏览0
下载0
收藏0
其他版本
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。