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Abstract: By introducing the thermo entangled state representation, we convert thecalculation of Wigner function WF of density operator to an overlap between-two pure- states in a two-mode enlarged Fock space. Furthermore, we derive anew WF evolution formula of any initial state in self-Kerr Medium with photonloss and find that the photon number distribution for any initial state isindependent of the coupling factor with Kerr Medium, where the number state isnot affected by the Kerr nonlinearity and evolves into a density operator ofbinomial distribution.



Autor: Li-yun Hu, Zheng-lu Duan, Xue-xiang Xu, Zi-sheng Wang

Fuente: https://arxiv.org/







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