论文标题

光束与电子介质相互作用。模型的确切解决方案及其在光子纠缠问题上的可能应用

Light beam interacting with electron medium. Exact solutions of the model and their possible applications to photon entanglement problem

论文作者

Breev, A. I., Gitman, D. M.

论文摘要

我们考虑了一个模型,用于描述由光子束与量化带电无旋转颗粒相互作用的QED系统。我们通过一个光子光束限制了自己,该光束由光子组成,其光子朝着相同的方向移动。每一刻的光子可能具有两个可能的线性极化。确切的解决方案对应于两个独立的子系统,其中一个对应于电子介质,另一种是由光子希尔伯特子空间中的向量描述的,并且代表了一组一些不相互相互作用的准photon。此外,我们发现模型的精确解决方案对应于放置在恒定磁场中的同一系统。例如,在可能的应用中,我们使用模型的解决方案通过量化的电子介质和恒定磁场来计算光子束的纠缠。因此,我们将光子束的纠缠度量(信息和施密特梁)计算为电子介质的施加磁场和参数的功能。

We consider a model for describing a QED system consisting of a photon beam interacting with quantized charged spinless particles. We restrict ourselves by a photon beam that consists of photons with two different momenta moving in the same direction. Photons with each moment may have two possible linear polarizations. The exact solutions correspond to two independent subsystems, one of which corresponds to the electron medium and another one is described by vectors in the photon Hilbert subspace and is representing a set of some quasi-photons that do not interact with each other. In addition, we find exact solution of the model that correspond to the same system placed in a constant magnetic field. As an example, of possible applications, we use the solutions of the model for calculating entanglement of the photon beam by quantized electron medium and by a constant magnetic field. Thus, we calculate the entanglement measures (the information and the Schmidt ones) of the photon beam as functions of the applied magnetic field and parameters of the electron medium.

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