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Preparation of freezing quantum state for quantum coherence

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Abstract

We provide a method to prepare the freezing quantum state for quantum coherence via unitary operations. The initial product state consists of the control qubit and target qubit; when it satisfies certain conditions, the initial product state converts into the particular Bell diagonal state under the unitary operations, which have the property of freezing of quantum coherence under quantum channels. We calculate the frozen quantum coherence and corresponding quantum correlations, and find that the quantities are determined by the control qubit only when the freezing phenomena occur.

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Acknowledgements

We acknowledge the financial support by the National Natural Science Foundation (China) under Grant Nos. 61675115, 11647171, 11574178, and 11304179.

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Authors and Affiliations

  1. Shandong Provincial Key Laboratory of Computation Theory Physics, Department of Physics and Information Engineering, Jining University, Qufu, 273155, China

    Lian-Wu Yang, Feng Han & Shao-jiang Du

  2. Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu, 273165, China

    Zhong-Xiao Man, Ying-Jie Zhang & Yun-Jie Xia

Authors
  1. Lian-Wu Yang
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  2. Zhong-Xiao Man
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  3. Ying-Jie Zhang
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  4. Feng Han
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  5. Shao-jiang Du
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  6. Yun-Jie Xia
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Correspondence to Lian-Wu Yang or Yun-Jie Xia.

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Yang, LW., Man, ZX., Zhang, YJ. et al. Preparation of freezing quantum state for quantum coherence. Quantum Inf Process 17, 127 (2018). https://doi.org/10.1007/s11128-018-1889-7

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  • DOI: https://doi.org/10.1007/s11128-018-1889-7

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