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arXiv 0808.0263quant-ph
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非相干泵浦场增益辅助超光速传输

Gain-assisted superluminal light propagation via incoherent pump field

M. Mahmoudi, S. Worya Rabiei, L. Safari, M. Sahrai

摘要:

研究了三能级原子系统中弱探测场的色散和吸收特性。我们只用一个非相干场来控制光的群速度。结果表明,色散斜率随间接非相干泵浦光强度的变化而由正变负。在该系统中出现了增益辅助的超光速光传播。在泵浦过程中不使用激光场。

英文摘要:

We investigate the dispersion and the absorption properties of a weak probe field in a three-level Lambda-type atomic system. We use just an incoherent field for controlling the group velocity of light. It is shown that the slope of dispersion changes from positive to negative just with changing the intensity of the indirect incoherent pumping field. Gain-assisted superluminal light propagation appears in this system. No laser field is used in the pumping processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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