Decoherence and Fidelity in Teleportation of Coherent Photon-Added Two-Mode Squeezed Thermal States

被引：0
作者：
Heng-Mei Li
Hong-Chun Yuan
Zhi-Long Wan
Zhen Wang
机构：
[1] Changzhou Institute of Technology,College of Science and Chemical Industry
[2] Changzhou Institute of Technology,College of Electrical and Optoelectronic Engineering
来源：
International Journal of Theoretical Physics | 2018年 / 57卷
关键词：
Non-Gaussian operation; Decoherence; Quantum teleportation; Wigner function;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We theoretically introduce a kind of non-Gaussian entangled resources, i.e., coherent photon-added two-mode squeezed thermal states (CPA-TMSTS), by successively performing coherent photon addition operation to the two-mode squeezed thermal states. The normalization factor related to bivariate Hermite polynomials is obtained. Based upon it, the nonclassicality and decoherence process are analyzed by virtue of the Wigner function. It is shown that the coherent photon addition operation is an effective way in generating partial negative values of Wigner function, which clearly manifests the nonclassicality and non-Gaussianity of the target states. Additionally, the fidelity in teleporting coherent states using CPA-TMSTS as entangled resource is quantified both analytically and numerically. It is found that the CPA-TMSTS is an entangled resource of high-efficiency and high-fidelity in quantum teleportation.
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页码：941 / 950
页数：9
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