Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system

	Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system
其他题名	论文其他题名
	Kuang S. Q.; Wan R. G.; Kou J.; Jiang Y.; Gao J. Y.
	2009
发表期刊	Journal of the Optical Society of America B-Optical Physics
ISSN	0740-3224
卷号	26 期号:12 页码:2256-2260
摘要	We theoretically investigate the influence of a coherent pump field on the propagation of a weak light pulse of a probe field in a four-level atomic system. Due to the modulation of the pump field, the light pulse can be manipulated from subluminal to superluminal with negligible distortion. This scheme can be realized in both the ultracold and Doppler-broadened atomic systems. We also demonstrate that the spectral linewidth with an anomalous dispersion is reduced by thermal averaging; therefore, one can obtain a larger negative group refractive index in room-temperature vapor than the largest value achieved in ultracold atomic gas. (C) 2009 Optical Society of America
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26224
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Kuang S. Q.,Wan R. G.,Kou J.,et al. Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system[J]. Journal of the Optical Society of America B-Optical Physics,2009,26(12):2256-2260.
APA	Kuang S. Q.,Wan R. G.,Kou J.,Jiang Y.,&Gao J. Y..(2009).Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system.Journal of the Optical Society of America B-Optical Physics,26(12),2256-2260.
MLA	Kuang S. Q.,et al."Switching from subluminal to superluminal light propagation via a coherent pump field in a four-level atomic system".Journal of the Optical Society of America B-Optical Physics 26.12(2009):2256-2260.

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