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Entanglement Purification of Noisy Two-Qutrit States Via Environment Measurement

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Abstract

Entanglement swapping combined with environment measurement is proposed to purify entanglement of two-qutrit entangled states subjected to the local individual amplitude damping channels. The resultant states of our scheme have much more entanglement even though entanglement swapping itself cannot purify entanglement. When the scheme is applied to dense coding, the dense coding capacity can be significantly improved.

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Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities under Grant No. 2015QNA44.

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Authors and Affiliations

  1. School of Physical Science and Technology, China University of Mining and Technology, Xuzhou, 221116, People’s Republic of China

    Liang Qiu, Zhi Liu & Fei Pan

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  1. Liang Qiu
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  2. Zhi Liu
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Correspondence to Liang Qiu.

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Qiu, L., Liu, Z. & Pan, F. Entanglement Purification of Noisy Two-Qutrit States Via Environment Measurement. Int J Theor Phys 57, 301–310 (2018). https://doi.org/10.1007/s10773-017-3562-9

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  • DOI: https://doi.org/10.1007/s10773-017-3562-9

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