Comparison of different techniques in optical trap for generating   picokelvin 3D atom cloud in microgravity

doi:10.1016/j.optcom.2015.09.065

CORC > 北京大学 > 信息科学技术学院

	Comparison of different techniques in optical trap for generating picokelvin 3D atom cloud in microgravity
	Yao, Hepeng ; Luan, Tian ; Li, Chen ; Zhang, Yin ; Ma, Zhaoyuan ; Chen, Xuzong
刊名	OPTICS COMMUNICATIONS
	2016
关键词	Laser cooling Optical trap Picokelvin Microgravity TSCBC DKC BOSE-EINSTEIN CONDENSATION COOLING ATOMS GAS
DOI	10.1016/j.optcom.2015.09.065
英文摘要	Pursuing ultralow temperature 3D atom gas under microgravity conditions is one of the popular topics in the field of ultracold research. Many groups around the world are using, or are planning to use, delta-kick cooling (DKC) in microgravity. Our group has also proposed a two-stage crossed beam cooling (TSCBC) method that also provides a path to picokelvin temperatures. In this paper, we compare the characteristics of TSCBC and DKC for producing a picokelvin system in microgravity. Using a direct simulation Monte Carlo (DSMC) method, we simulate the cooling process of Rb-87 using the two different cooling techniques. Under the same initial conditions, Rb-87 can reach 7 pK in 15 s using TSCBC and 75 pK in 5.1 s with DKC. The simulation results show that TSCBC can reach lower temperatures compared with DKC, but needs more time and a more stable laser. (C) 2015 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [91336103, 61027016, 61078026, 10934010]; National Fundamental Research Program of China [SQ2010CB511493, 2011CB921501]; SCI(E); EI; ARTICLE; xuzongchen@pku.edu.cn; 123-128; 359
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/422633]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Yao, Hepeng,Luan, Tian,Li, Chen,et al. Comparison of different techniques in optical trap for generating picokelvin 3D atom cloud in microgravity[J]. OPTICS COMMUNICATIONS,2016.
APA	Yao, Hepeng,Luan, Tian,Li, Chen,Zhang, Yin,Ma, Zhaoyuan,&Chen, Xuzong.(2016).Comparison of different techniques in optical trap for generating picokelvin 3D atom cloud in microgravity.OPTICS COMMUNICATIONS.
MLA	Yao, Hepeng,et al."Comparison of different techniques in optical trap for generating picokelvin 3D atom cloud in microgravity".OPTICS COMMUNICATIONS (2016).