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Distort one qubit from copying and deleting

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Abstract

Immeasurability of a quantum state has important consequence in practical implementation of quantum computers. Our purpose is to analyze the efficiency of the entangled output of Pati-Braunstein deleting machine or Wootters-Zurek quantum copying machine as a quantum channel. Interestingly we find that for special values of the input parameter the state does not violate the Bell’s inequality. Moreover, we analyze the performances of the entangled output of Pati-Braunstein deleting after the Wootters-Zurek copying machine.

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Authors and Affiliations

  1. Information Security Center, School of Information Science and Technology, Southwest Jiaotong University, Chengdu, 610031, China

    Ming-Xing Luo

  2. Institute of Computer Science, Sichuan University of Science Engineering, Zigong, 64300, China

    Yun Deng

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  1. Ming-Xing Luo
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  2. Yun Deng
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Correspondence to Ming-Xing Luo.

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Luo, MX., Deng, Y. Distort one qubit from copying and deleting. Quantum Inf Process 12, 1701–1717 (2013). https://doi.org/10.1007/s11128-012-0484-6

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  • DOI: https://doi.org/10.1007/s11128-012-0484-6

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