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Statistical properties of coherent photon-subtracted two-mode squeezed vacuum and its application in quantum teleportation
Authors:Zhang Guo-Ping  Zheng Kai-Min  Liu Shi-You  Hu Li-Yun
Abstract:We introduce a kind of non-Gaussian entangled state, which can be obtained by operating a non-local coherent photonsubtraction operation on a two-mode squeezed vacuum. It is found that its normalization factor is only related to the Legendre polynomials, which is a compact expression. Its statistical properties are discussed by the negative region Wigner function with the analytical expression. As an application, the quantum teleportation for coherent states is considered by using the non-Gaussian state as an entangled channel. It is found that the teleportation fidelity can be enhanced by this non-Gaussian operation.
Keywords:coherent photon subtraction  two-mode squeezed vacuum  quantum teleportation  fidelity
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