Abstract
We study the thermal entanglement and teleportation using quantum dot as the quantum channel. We firstly investigate the evolution of entanglement in the vertical quantum dot, then focus on the effects of the important parameters of the system on the teleported fidelity under different conditions. We obtain the critical temperature of suddenly dead entanglement. Based on Bell measurements in two subspaces, the isotropy and anisotropy subspaces, we can find that the anisotropy measurements always overmatch the isotropy ones. Moreover, we obtain the high-fidelity teleportation for quantum dot as quantum channel when the parameters are adjusted. The possible applications of quantum dot are expected in quantum teleportation
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Acknowledgements
This work is partly supported by the NSF of China (Grant No. 11075101), Shanghai Leading Academic Discipline Project (Project No. S30105) and Shanghai Research Foundation under Grant No. 07d222020. The authors are grateful to Xin-Jian Xu for valuable discussions.
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Qin, LG., Tian, LJ. & Yang, GH. Quantum Entanglement and Teleportation in a Vertical Quantum Dot. Int J Theor Phys 52, 4313–4322 (2013). https://doi.org/10.1007/s10773-013-1748-3
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DOI: https://doi.org/10.1007/s10773-013-1748-3