Abstract
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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Acknowledgements
The work was supported by the National Natural Science Foundation of China (Grant Nos. 11447002, 11447202, and 11574295), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant Nos. 16KJB140001 and 14KJD140001), the key project of Natural Science Foundation of the Changzhou Institute of Technology of China (Grant No. YN1630).
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Li, HM., Yuan, HC., Wan, ZL. et al. Decoherence and Fidelity in Teleportation of Coherent Photon-Added Two-Mode Squeezed Thermal States. Int J Theor Phys 57, 941–950 (2018). https://doi.org/10.1007/s10773-017-3626-x
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DOI: https://doi.org/10.1007/s10773-017-3626-x