Comment on “Quantum Teleportation of Eight-Qubit State via Six-Qubit Cluster State”

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Abstract

Recently, Zhao et al. (Int. J. Theor. Phys. 57, 516–522 2018) have proposed a scheme for quantum teleportation of an eight-qubit quantum state using a six qubit cluster state. In this comment, it’s shown that the quantum resource (multi-partite entangled state used as the quantum channel) used by Zhao et al., is excessively high and the task can be performed using any two Bell states as the task can be reduced to the teleportation of an arbitrary two qubit state. Further, a trivial conceptual mistake made by Zhao et al., in the description of the quantum channel has been pointed out. It’s also mentioned that recently a trend of proposing teleportation schemes with excessively high quantum resources has been observed and the essence of this comment is applicable to all such proposals.

Keywords

Quantum teleportation Optimal quantum resource Teleportation using optimal quantum resources Uses of Bell states 

Notes

Acknowledgments

AP thanks the SERB, Department of Science and Technology (DST), India, for support provided through the project No. EMR/2015/000393. AP and MS also thank K. Thapliyal for his interest in this work some useful discussions.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Jaypee Institute of Information TechnologyNoidaIndia

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