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Entanglement Purification on Separate Atoms in an Error-Detected Pattern

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Abstract

We propose an entanglement purification protocol (EPP) for purifying separate atoms embedded in single-sided optical cavities. The protocol works in an error-detected pattern, the reflection coefficients only appear as a global coefficient, the success or failure cases are heralded by the detection of photons, these merits make the protocol more robust and practical. We discuss the performance of the protocol with current experimental parameters, the results show the success probability of the present EPP is relatively high. The EPP could provide a promising building block for quantum repeaters and quantum networks in the future.

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Acknowledgments

We thank Li-Li Sun for helpful discussions. This work is supported by the Scientific Research Foundation of Shanxi Institute of Technology No. 201706001, the Fund for Shanxi “1331 Project” Key Subjects Construction, the China Postdoctoral Science Foundation under Grant No. 2017M612411, the Education Department Foundation of Henan Province Under Grant No. 18A140009, and the National Natural Science Foundation of China under Grants No. 61821280, 11604190 and No. 61465013.

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Authors and Affiliations

  1. Shanxi Institute of Technology, Yangquan, Shanxi, 045000, China

    A-Peng Liu

  2. College of Physics and Electronics Engineering, Shanxi University, Taiyuan, Shanxi, 030006, China

    Qi Guo

  3. School of Physical Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450052, China

    Shi-Lei Su

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

    Liu-Yong Cheng

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

    Hong-Fu Wang & Shou Zhang

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  1. A-Peng Liu
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Liu, AP., Guo, Q., Su, SL. et al. Entanglement Purification on Separate Atoms in an Error-Detected Pattern. Int J Theor Phys 58, 1404–1417 (2019). https://doi.org/10.1007/s10773-019-04030-w

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