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Catalysing quantum information processing task using LOCC distinguishability

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Abstract

Entanglement is a key ingredient for performing information processing protocols. On the other hand, it is known that there may exist non-locality without entanglement. Distinguishing a set of unknown states by local operation and classical communication (LOCC) can be recast as a manifestation of non-locality. Motivated by this fact, we have explored a novel relation between entanglement and LOCC distinguishability of an ensemble of entangled states. We have shown explicitly that an ensemble of LOCC distinguished states is more efficient for quantum information processing protocol than those states which cannot be discriminated deterministically by LOCC.

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Acknowledgements

The authors would like to thank Prof. Pankaj Agrawal for valuable discussions and comments which helped a lot to develop this work.

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  1. Institute of Physics, Sachivalaya Marg, Bhubaneswar,  751 005, India

    Sumit Nandi

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  1. Sumit Nandi
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Correspondence to Sumit Nandi.

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Nandi, S. Catalysing quantum information processing task using LOCC distinguishability. Pramana - J Phys 95, 155 (2021). https://doi.org/10.1007/s12043-021-02194-x

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  • DOI: https://doi.org/10.1007/s12043-021-02194-x

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