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arXiv physics/9904033physics.atom-phquant-ph
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四态N原子作为电磁诱导吸收的简单理论模型

Four-state N-atom as a simple theoretical model for electromagnetically induced absorption

A. V. Taichenachev, A. M. Tumaikin, V. I. Yudin

摘要:

提出了一个简单的理论模型,描述了Akulshin及其同事最近的实验(Phys. Rev. A,{ \bf 57},2996(1998))中亚自然宽度吸收共振的正号。的线性响应的弱探测场的解析表达式被发现在低饱和极限相对于控制字段。结果表明,亚自然共振的正符号是由光致相干从激发态自发转移到基态引起的。

英文摘要:

A simple theoretical model describing the positive sign of subnatural-width absorption resonances in the recent experiment of Akulshin and co-workers (Phys. Rev. A, {\bf 57}, 2996 (1998)) is proposed. An analytical expression for the linear response to the weak probe field is found in the low-saturation limit with respect to the control field. It is shown that the positive sign of subnatural resonance is caused by the spontaneous transfer of the light-induced coherence from the excited level to the ground one.

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