Kerr效应对二项式腔场谱量子干涉的影响

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摘要：研究了含Kerr介质高Q腔内单个二能级原子与双模二项式光场发生双光子共振相互作用系统的腔场谱,给出了Kerr效应与量子干涉项ΔS(ω)关系的数值计算结果,讨论了Kerr效应对二项式腔场谱量子干涉的影响.结果表明:若初始时刻原子处于激发态而双模光场处于二项式态,随Kerr效应的增强,致使量子干涉项引起谱线强度的改变量呈现出"不规则的周期性衰减振荡"特性,震荡幅度与两模光场的频差密切相关.在Kerr系数χ＜g(g为光场与原子的耦合常数)时,
关键词：腔场谱量子干涉 Kerr效应二项式光场

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	李悦科
	张桂明
	高云峰

Abstract： The cavity field spectrum of the nondegenerate two-photon Jayners-Cummings model with an additional Kerr medium is investigated. The results for the initial fields in binomial states are presented. The influence of the Kerr effect on the quantum interference of the two mode cavity field spectra is discussed. It is found that the quantum interference item shows a periodical damped oscillation irregularly when the Kerr effect is increased. The amplitude of the oscillation relate to the difference of the two field frequencies intimately. When the Kerr coefficient χ<g (g is coupling coefficient between atom and the fields), the change of the quantum interference item is strong with χ. And when χ>g, it is weakly. The cavity field spectra usually take on a complex asymmetric structure with many peaks when Kerr coefficient is large.
Keywords： cavity field spectrum quantum interference Kerr-effect binomial state field

收稿日期: 2009-10-21 出版日期: 2010-09-15

PACS:	PACC:4250
	3280
	PACS:42.50.Dv
	32.80.Wr	(Other multiphoton processes)

基金: 国家自然科学基金(批准号:10574060)和山东省自然科学基金(批准号:ZR2009AM019)资助的课题.

引用本文:

李悦科,张桂明,高云峰. Kerr效应对二项式腔场谱量子干涉的影响. 物理学报, 2010, 59(9): 6184.

Cite this article:

Li Yue-Ke,Zhang Gui-Ming,Gao Yun-Feng. Influence of Kerr-effect on the quantum interference of the cavity field spectrum within two mode binomial initial field. Acta Phys. Sin., 2010, 59(9): 6178-6184.

URL:

http://wulixb.iphy.ac.cn/CN/Y2010/V59/I9/6178

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