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Quantum teleportation by utilizing helical spin chains for sharing entanglement

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Abstract

We develop a new protocol for sharing entanglement (one ebit) between two parties using the natural dynamics of helical multiferroic spin chains. We introduce a novel kicking scheme of the electric field for enhancing the teleportation fidelity in our protocol that works in the presence of an appropriate choice of parameters. We also investigate the effect of a common spin environment causing decoherence in the entanglement sharing channel. We compare the results to that of XXZ and XX models subject to a similar entanglement sharing protocol and find that the helical multiferroic chain with the kicking scheme provides a better singlet fraction. We show that the kicking scheme in conjugation with the optimized parameters enhances the fidelity of teleportation even in the presence of impurities and/or decoherence. The advantage of the kicking scheme shown in the impurity cases is an important result to be useful in a realizable setup of helical multiferroic spin chain.

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Acknowledgements

SKM acknowledges the Department of Science and Technology, India for support grant under the INSPIRE Faculty Fellowship award (IFA-12 PH 22). JB and LC acknowledge the financial support of the DFG through SFB762.

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Authors and Affiliations

  1. Centre for Engineered Quantum Systems (EQUS), School of Mathematics and Physics, The University of Queensland, St Lucia, QLD, 4072, Australia

    Harshit Verma

  2. Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099, Halle, Germany

    Levan Chotorlishvili & Jamal Berakdar

  3. Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India

    Sunil Kumar Mishra

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  1. Harshit Verma
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  2. Levan Chotorlishvili
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  3. Jamal Berakdar
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  4. Sunil Kumar Mishra
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Correspondence to Harshit Verma.

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Verma, H., Chotorlishvili, L., Berakdar, J. et al. Quantum teleportation by utilizing helical spin chains for sharing entanglement. Quantum Inf Process 20, 54 (2021). https://doi.org/10.1007/s11128-020-02971-4

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