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	Number fluctuation dynamics of a spin-1 atomic condensate
	Zhai, Q. ; Chang, Lee ; Lu, Rong ; You, L.
	2010-10-12 ; 2010-10-12
关键词	coherence fluctuations hyperfine structure pendulums quantisation (quantum theory) BOSE-EINSTEIN CONDENSATE GROUND-STATE MEAN-FIELD COLLAPSE REVIVAL GASES Optics Physics, Atomic, Molecular & Chemical
中文摘要	We provide further details on atom number fluctuation during spin-mixing dynamics inside an F=1 spinor condensate, based on the effective quantization approach we reported earlier [L. Chang , Phys. Rev. Lett. 99, 080402 (2007)] for the semiclassical nonrigid pendulum model in terms of the relative phase and the atomic population in the magnetic (B-)field insensitive hyperfine state parallel to F-z=0 >. Many features of the classical nonrigid pendulum model are reproduced. In addition, features typically associated with full quantum simulations specific to our model system, such as atom number fluctuations both in stationary states and during the dynamics of spin mixing, are faithfully revealed with our effective quantization approach. We check the validity of the effective quantization theory by performing extensive numerical comparisons with the results from full quantum many-body simulations. We study the effect of quantum coherence in our system and provide a solid theoretical basis to resolve the resolution limit in counting atoms that is needed to clearly detect quantum correlation effects in spin mixing.
语种	英语 ; 英语
出版者	AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81575]
专题	清华大学
推荐引用方式 GB/T 7714	Zhai, Q.,Chang, Lee,Lu, Rong,et al. Number fluctuation dynamics of a spin-1 atomic condensate[J],2010, 2010.
APA	Zhai, Q.,Chang, Lee,Lu, Rong,&You, L..(2010).Number fluctuation dynamics of a spin-1 atomic condensate..
MLA	Zhai, Q.,et al."Number fluctuation dynamics of a spin-1 atomic condensate".(2010).

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