Bragg spectroscopy of a superfluid Bose-Hubbard gas

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	Bragg spectroscopy of a superfluid Bose-Hubbard gas
	X. Du ; S. P. Wan ; E. Yesilada ; C. Ryu ; D. J. Heinzen ; Z. X. Liang ; B. A. Wu
刊名	New Journal of Physics
	2010
卷号	12
关键词	einstein condensate mott insulator optical lattices light-scattering atoms transition
ISSN号	1367-2630
中文摘要	Bragg spectroscopy is used to measure the excitations of a trapped, quantum-degenerate gas of (87)Rb atoms in a three-dimensional (3D) optical lattice. The measurements are carried out over a range of optical lattice depths in the superfluid phase of the Bose-Hubbard model. For a fixed wavevector, the resonant frequency of the excitation is found to decrease with increasing lattice depth. A numerical calculation of the resonant frequencies based on Bogoliubov theory shows a less steep rate of decrease than the measurements.
原文出处	://WOS:000281279200005
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31083]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Du,S. P. Wan,E. Yesilada,et al. Bragg spectroscopy of a superfluid Bose-Hubbard gas[J]. New Journal of Physics,2010,12.
APA	X. Du.,S. P. Wan.,E. Yesilada.,C. Ryu.,D. J. Heinzen.,...&B. A. Wu.(2010).Bragg spectroscopy of a superfluid Bose-Hubbard gas.New Journal of Physics,12.
MLA	X. Du,et al."Bragg spectroscopy of a superfluid Bose-Hubbard gas".New Journal of Physics 12(2010).