Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 2011年以前论文发表（包括2011年）

	Finite-temperature Effect in Phase Transition to Superfluidity for Bose-Einstein Condensates in a 1-D Optical Lattice
	Wang, Xiaorui 1,2; Tan, Xinzhou 1,2; Yang, Lu 1,2; Xiong, Hongwei 1; Lue, Baolong 1
刊名	JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
	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.
学科主题	原子分子物理学
WOS标题词	Science & Technology ; Physical Sciences
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
内容类型	期刊论文
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.