Einstein-Podolsky-Rosen correlation and continuous-variable quantum teleportation for the non-Gaussian entangled state with coherent component

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• 作者：Li-Li Hou ; Ke-Hui Jia ; Xian-Feng Chen ; ^{slxyhll2016@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：EPR correlation ; Teleportation fidelity ; Two-mode squeezed coherent state ; Photon subtraction
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：127
• 期：7
• 页码：3614-3619
• 全文大小：1490 K

文摘

We investigate the role of the coherent displacements in the entanglement and the quantum teleportation when PS-TMSCs considered as an entangled resource. We find that the scheme of asymmetric photon-subtraction operation and the displacement parameters involving in the two-mode squeezed coherent state (TMSCs) will decrease the EPR correlation and the fidelity of the coherent teleportation. While the EPR correlation and the fidelity of the coherent teleportation can be effectively enhanced by the symmetric photon subtraction. In addition, the improvement increases with the number of the symmetric operations in small-squeezing regime.