Experimental research on loading strontium bosons into the optical lattice operating at the "magic" wavelength

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	Experimental research on loading strontium bosons into the optical lattice operating at the "magic" wavelength
	Tian Xiao; Wang Ye-Bing; Lu Ben-Quan; Liu Hui; Xu Qin-Fang; Ren Jie; Yin Mo-Juan; Kong De-Huan; Chang Hong; Zhang Shou-Gang
	2015
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
卷号	64 期号:13
摘要	The optical lattice clock with neutral atoms occupies an outstanding position in the research field of atomic clocks, demonstrating the great potential of its performance (like the uncertainty and the stability). At present, the optical lattice clock has realized a 10(-18) level of its uncertainty. In this paper, we present the realization of loading bosonic atoms Sr-88 (strontium, alkaline-earth metals) into a one-dimensional (1D) optical lattice in our laboratory. The optical lattice where the atoms are trapped can make the energy level shift, called Stark shift. But there is the special optical lattice operating at the "magic" wavelength for clock transitions (5s(2)) S-1(0) (5s5p) P-3(0), which can make the same Stark light-shift for both of them, indicating a zero light-shift relative to the clock. In our experiment, Sr atoms are cooled in a two-stage cooling and its temperature can be as low as 2 mu K. Then these cold atoms are confined in the Lamb-Dicke region by the lattice laser output from an amplified diode laser operating at the "magic" wavelength, 813 nm. Experimentally, it is straightforward to provide 850 mW of lattice power focused to a 38 mu m beam radius. After the cold atoms have trapped in the optical lattice, the lifetime of atoms in 1D optical lattice is measured to be 270 ms. The temperature and the number are about 3.5 mu K and 1.2 x 10(5) respectively. Besides, effects of the power of the lattice laser on both the number and temperature are analyzed. The number changes linearly with the laser power, while there is no obvious influence on the temperature by the power. This original and special approach for atoms trapped in the optical lattice can provide a long interrogation time for probing the clock transition. Furthermore, it may be the foundation for developing our optical lattice clock of strontium atoms.
部门归属	量子频标研究室
收录类别	SCI
语种	中文
WOS记录号	WOS:000357674600006
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/7381
专题	量子频标研究室
推荐引用方式 GB/T 7714	Tian Xiao,Wang Ye-Bing,Lu Ben-Quan,et al. Experimental research on loading strontium bosons into the optical lattice operating at the "magic" wavelength[J]. ACTA PHYSICA SINICA,2015,64(13).
APA	Tian Xiao.,Wang Ye-Bing.,Lu Ben-Quan.,Liu Hui.,Xu Qin-Fang.,...&Zhang Shou-Gang.(2015).Experimental research on loading strontium bosons into the optical lattice operating at the "magic" wavelength.ACTA PHYSICA SINICA,64(13).
MLA	Tian Xiao,et al."Experimental research on loading strontium bosons into the optical lattice operating at the "magic" wavelength".ACTA PHYSICA SINICA 64.13(2015).

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