Slow light with a doublet structure: Underlying physical processes and basic limitations
Slow light with a doublet structure: Underlying physical processes and basic limitations
复制标题
具有双合态结构的慢光：潜在的物理过程和基本限制
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Odeurs
中科院分区：
文献类型：
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作者：
R. Shakhmuratov;J. Odeurs
本文对具有两个宽吸收共振的介质中产生的慢光进行了解析研究。我们表明，在这样的双峰结构的中间频率调谐的脉冲减慢，由于其能量存储在激发态的原子。如果原子激发的寿命比脉冲持续时间长得多，则对于具有平滑包络的脉冲，脉冲形状在厚样品的输出处很好地再现。具有锐边的脉冲在输出端被公平地再现。脉冲幅度的每个突变之后都有瞬变，瞬变与脉冲一起延迟。还考虑了减慢单个光子的可能性。
Slow light, produced in a medium with two widely spaced absorption resonances, is analytically studied. We show that a pulse with frequency tuned in the middle of such a doublet structure slows down due to its energy storage in the excited atomic states. If the lifetime of the atomic excitation is much longer than the pulse duration, the pulse shape is nicely reproduced at the output of a thick sample for pulses with smooth envelopes. Pulses with sharp edges are fairly reproduced at the output. Each abrupt change of the pulse amplitude is followed by transients, which are delayed together with the pulse. A possibility to slow down a single photon is also considered.