论文标题
高谐波生成中光子统计和互相关的量子光学描述
A quantum optical description of photon statistics and cross-correlations in high harmonic generation
论文作者
论文摘要
我们介绍了一项与高阶谐波产生（HHG）相关的光子统计数据，该统计涉及高谐波光子的一模式和模式相关性。本文的目的是深入了解高阶谐波模式的非经典特性。为此，我们使用了描述基本量子发射极的简化模型：两级原子的模型。尽管在此描述中非常简化了材料系统，但对于更复杂的情况，结论和方法可能会被推广。我们的主要兴趣是一个有效的HHG模型，其中令人兴奋的脉冲是经典的，并且对谐波进行了量化，尽管我们还涉及了更概括，更全面的模型。计算了曼德尔参数，光子抗挑战，挤压和互相关的演变。结果表明，对于单个量化的发射极，存在谐波的非古老性：亚纤维下光子统计和挤压可以表征某些光学模式，而强大的反相关也可以存在。
We present a study of photon statistics associated with high-order harmonic generation (HHG) involving one-mode and intermodal correlations of the high harmonic photons. The aim of the paper is to give insight into the nonclassical properties of high-order harmonic modes. To this end, we use a simplified model describing an elementary quantum emitter: the model of a two-level atom. While the material system is extremely simplified in this description, the conclusions and the methods may be generalized for more complex cases. Our primary interest is an effective model of HHG in which the exciting pulse is classical, and the harmonics are quantized, although we touch upon the more generalized, fully quantized model as well. Evolution of the Mandel-parameter, photon antibunching, squeezing and cross-correlations are calculated. Results imply that with respect to a single quantized emitter, nonclassicality of the harmonics is present: sub-Poissonian photon statistic and squeezing can characterize certain optical modes, while strong anticorrelation can also be present.
