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Protecting quantum entanglement and correlation by local filtering operations

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Abstract

In this work, the protection of different quantum entanglement and correlation is explored by local filtering operations. The results show that the filtering operations can indeed be useful for combating amplitude-damping decoherence and recovering the quantum entanglement and correlation. In this scheme, although the final states satisfy the quantum entanglement and correlation, the corresponding initial noisy states does not satisfy them, which means that the filtering operations can reveal the hidden genuine quantum entanglement and correlation of these initial noisy states.

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Acknowledgments

This work was supported by the National Science Foundation of China under Grant Nos. 61275119 and 11575001, and also by the Natural Science Research Project of Education Department of Anhui Province of China under Grant No. KJ2013A205.

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Authors and Affiliations

  1. School of Physics and Material Science, Anhui University, Hefei, 230039, People’s Republic of China

    Chunyu Huang, Wenchao Ma & Liu Ye

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  1. Chunyu Huang
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Correspondence to Liu Ye.

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Huang, C., Ma, W. & Ye, L. Protecting quantum entanglement and correlation by local filtering operations. Quantum Inf Process 15, 3243–3256 (2016). https://doi.org/10.1007/s11128-016-1328-6

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  • DOI: https://doi.org/10.1007/s11128-016-1328-6

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