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Fidelity and Entanglement with Environment Effect

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Abstract

A quantum entangling gate is investigated in dissipative system by considering input initial entangled two qubits. By analyzing the relation between the fidelity and the concurrence, we find that the fidelity of gate is strongly correlated to the entanglement of the qubits, where the center positions of entangled death is corresponding to the turning points of the fidelity. The results are helpful for one to implement quantum computation with dissipative effects.

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Acknowledgements

This work is supported by the Natural Science Foundation under Grant No. 11365012, the Natural Science Foundation of Jiangxi Province, China under Grant No. 2010GZW0026 and No. 20132BAB202008, the Foundation of Science and Technology of Education Office of Jiangxi Province under Grant No. GJJ10404 and No. GJJ13235.

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Authors and Affiliations

  1. College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, 330022, People’s Republic of China

    Guolan Fu & Z. S. Wang

  2. College of Sciences, Jinggangshan University, Ji’an, 343009, Jiangxi, People’s Republic of China

    Z. Q. Chen

  3. School of Nuclear Engineering Technology, East China Institute of Technology, Fuzhou, Jiangxi, 344000, People’s Republic of China

    Huangyun Rao

  4. School of Physics and Technology, Wuhan University, Wuhan, 430072, People’s Republic of China

    L. P. Guo

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  1. Guolan Fu
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  2. Z. Q. Chen
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  3. Huangyun Rao
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  4. L. P. Guo
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  5. Z. S. Wang
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Correspondence to Z. S. Wang.

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Fu, G., Chen, Z.Q., Rao, H. et al. Fidelity and Entanglement with Environment Effect. Int J Theor Phys 53, 146–158 (2014). https://doi.org/10.1007/s10773-013-1792-z

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  • DOI: https://doi.org/10.1007/s10773-013-1792-z

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