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arXiv 2102.09450quant-ph
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拉曼过程中斯托克斯和反斯托克斯光子的理想配对

Ideal pairing of the Stokes and anti-Stokes photons in the Raman process

Kishore Thapliyal, Jan Perina

摘要:

建立了一个具有独立Stokes和Anti-Stokes非线性相互作用的Raman过程的量子模型,研究了Stokes和Anti-Stokes场中光子之间的非经典关联.阐明了激光抽运振幅、斯托克斯与反斯托克斯耦合常数之比以及振动模的布居数和损耗在形成关联中的作用。对$ g^{(2)} $的强度交叉关联函数、噪声衰减因子、双模主压缩方差、对数负值、非经典深度、转向参数和Bell参数进行了分析,揭示了Stokes场和反Stokes场之间的关联。的斯托克斯和反斯托克斯领域组成的光子对的条件,类似于它发生在双光束中的参数下转换,揭示。它们允许非零的平均热声子数。

英文摘要:

A quantum model of the Raman process with the independent Stokes and anti-Stokes nonlinear interactions is developed to study nonclassical correlations between the photons in the Stokes and anti-Stokes fields. The role of the laser pump amplitude, the ratio of the Stokes and anti-Stokes coupling constants and the population and losses of the vibrational mode in forming the correlations is elucidated. The $ g^{(2)} $ intensity cross-correlation function, noise-reduction-factor, two-mode principal squeezing variance, logarithmic negativity, non-classicality depth, steering parameter and the Bell parameter are analyzed side-by-side to shed light to the correlations between the Stokes and anti-Stokes fields. Conditions for having the Stokes and anti-Stokes fields composed of only photon pairs, similarly as it occurs in twin beams in parametric down-conversion, are revealed. They allow for nonzero mean thermal phonon numbers.

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