论文标题
光子状态的三种忠诚度措施
Three measures of fidelity for photon states
论文作者
论文摘要
我们表明，通过规范场量化引入电磁场的量子描述的标准方法并不是唯一的一种。我们在这里选择了光子的相对论量子力学作为起点。在量化电磁场方面，作为基本颗粒作为基本颗粒的处理与描述平稳融合，但它也揭示了一些基本差异。最引人注目的结果是出现了光子量子状态的各种保真度。这些措施用于表征光子的定位。
We show that the standard method of introducing the quantum description of the electromagnetic field -- by canonical field quantization -- is not the only one. We have chosen here the relativistic quantum mechanics of the photon as the starting point. The treatment of photons as elementary particles merges smoothly with the description in terms of the quantized electromagnetic field but it also reveals some essential differences. The most striking result is the appearance of various measures of fidelity for quantum states of photons. These measures are used to characterize the localization of photons.
