| V系统中实现群速度由慢光速到超光速的转换 |
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| 引用本文： | 杜丹,王振华,彭志华.V系统中实现群速度由慢光速到超光速的转换[J].南华大学学报(自然科学版),2009,23(4):49-52. |
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| 作者姓名： | 杜丹 王振华 彭志华 |
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| 作者单位： | 南华大学,数理学院,湖南,衡阳,421001 |
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| 摘 要： | 在近简并的封闭三能级V系统中,一束弱激光探测场的群速度可以通过控制一单色驱动场的强度实现慢光速到超光速的转换.采用修饰态的方法在物理上解释了产生这种现象的可能原因.
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| 关 键 词： | V系统 群速度 慢光速 超光速 相干布局捕获 |
| 收稿时间： | 5/5/2009 12:00:00 AM |
The Change of Group Velocity:from Subluminal to Superluminal Light Propagation in the V System |
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| DU Dan,WANG Zhen-hu,PENG Zhi-hua.The Change of Group Velocity:from Subluminal to Superluminal Light Propagation in the V System[J].Journal of Nanhua University:Science and Technology,2009,23(4):49-52. |
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| Authors: | DU Dan WANG Zhen-hu PENG Zhi-hua |
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| Institution: | School of Mathematics and Physics,University of South China,Hengyang,Hunan 421001,China |
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| Abstract: | This paper reveals that the group velocity of a weak laser probe field can be manipulated by controlling the intensity of the driving field applied to a near-degenerate closed three-level V system.Such control can even cause the probe propagation to change from subluminal to superluminal.And the results mentioned above can be understood in terms of dressed states. |
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| Keywords: | V system group velocity subluminal light propagation superluminal light propagation coherent-population-trapping |
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