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Scheme for assisted cloning an unknown arbitrary three-qubit state

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Abstract

We present a scheme for perfect cloning or orthogonal complementing an unknown arbitrary three-qubit state with assistance. This cloning scheme is divided into two stages. In the first stage, the initial state can be teleported from a sender to a receiver probabilistically via three partially entangled states. In the second stage, the exact copying and orthogonal complementing of the three-qubit state can be created with unity fidelity in a probabilistic manner with the state preparer performing an appropriate tri-particle projective measurement. It is shown that for some special ensembles of the three-qubit state our assisted cloning scheme can be achieved exactly and deterministically.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiaotong University, 200030, Shanghai, China

    Xiao-Qi Xiao

  2. State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, 200062, Shanghai, China

    Jin-Ming Liu

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  1. Xiao-Qi Xiao
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  2. Jin-Ming Liu
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Correspondence to Xiao-Qi Xiao.

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Xiao, XQ., Liu, JM. Scheme for assisted cloning an unknown arbitrary three-qubit state. Quantum Inf Process 10, 567–574 (2011). https://doi.org/10.1007/s11128-010-0218-6

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  • DOI: https://doi.org/10.1007/s11128-010-0218-6

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