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量子辐射场的虚化态［１］是Ｓｒｉｎｉｖａｓａｎ和Ｌｅｅ从一个真实的量子辐射场的物理态和与之对应的非物理态的分布函数出发引入的，而类虚化态［２］是ｄｅＬｉｍａ等人从真实的物理态出发引出的，本文证明量子辐射场的八光子相干态是类虚化态
The vanishing state of the quantum radiation field is introduced by Srinivasan and Lee from the physical states of a real quantum radiation field and their corresponding non-physical distribution functions, while the degenerate state [2] is deLima et al. Starting from the real physical state, the paper proves that the eight-photon coherent state of the quantum radiation field is a kind of virtual state