电磁辐射的广义极化矩阵
General Polarization Matrix of Electromagnetic Radiation
摘要：
极化矩阵的一般形式适用于任何类型的电磁辐射（平面波，多极辐射等）。定义为场强张量的某种双线性形式。量子对应物被确定为相对于创建和湮灭运营商的正常有序元素的运营商矩阵。通过反正规有序算子极化矩阵与正规有序算子极化矩阵的差定义了极化零点振荡。结果表明，多极场的ZPO比平面波模型描述的ZPO强，且集中在局部源的某一邻域内。
英文摘要：
A general form of the polarization matrix valid for any type of electromagnetic radiation (plane waves, multipole radiation etc.) is defined in terms of a certain bilinear form in the field-strength tensor. The quantum counterpart is determined as an operator matrix with normal-ordered elements with respect to the creation and annihilation operators. The zero-point oscillations (ZPO) of polarization are defined via difference between the anti-normal and normal ordered operator polarization matrices. It is shown that ZPO of the multipole field are stronger than those described by the model of plane waves and are concentrated in a certain neighborhood of a local source.
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