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Environment-assisted entanglement restoration and improvement of the fidelity for quantum teleportation

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Abstract

Three environment-assisted schemes are proposed to suppress the amplitude dam** decoherence for entanglement distribution via weak measurement reversal. Based on the measurement of environment and appropriate weak measurement reversal operations, the initial entangled state can be recovered between two separated participants with high success probability and fidelity. In some specific cases, the restored optimal concurrence could reach up to 1 without requirement of the reversing measurement. Moreover, we concretely show that the proposed environment-assisted entanglement restoration can be applied to quantum teleportation to significantly improve the fidelity of the teleported state.

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Authors and Affiliations

  1. Department of Physics, College of Science, Yanbian University, Yanji, 133002, Jilin, China

    **an-Mei Xu, A-Peng Liu, Hong-Fu Wang & Shou Zhang

  2. School of Physics and Information Engineering, Shanxi Normal University, Linfen, 041004, Shanxi, China

    Liu-Yong Cheng

  3. Department of Physics, Harbin Institute of Technology, Harbin, 150001, China

    Shi-Lei Su

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  1. **an-Mei Xu
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  2. Liu-Yong Cheng
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  3. A-Peng Liu
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  4. Shi-Lei Su
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  5. Hong-Fu Wang
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  6. Shou Zhang
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Correspondence to Shou Zhang.

Additional information

This work is supported by the National Natural Science Foundation of China under Grant Nos. 61465013, 11465020, and 11264042; the Program for Chun Miao Excellent Talents of Jilin Provincial Department of Education under Grant No. 201316; and the Talent Program of Yanbian University of China under Grant No. 950010001.

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Xu, XM., Cheng, LY., Liu, AP. et al. Environment-assisted entanglement restoration and improvement of the fidelity for quantum teleportation. Quantum Inf Process 14, 4147–4162 (2015). https://doi.org/10.1007/s11128-015-1111-0

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