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Quantum Information Processing

, Volume 14, Issue 7, pp 2599–2616 | Cite as

Applications of quantum cryptographic switch: various tasks related to controlled quantum communication can be performed using Bell states and permutation of particles

  • Kishore Thapliyal
  • Anirban Pathak
Article

Abstract

Recently, several aspects of controlled quantum communication (e.g., bidirectional controlled state teleportation, controlled quantum secure direct communication, controlled quantum dialogue, etc.) have been studied using \(n\)-qubit \((n\ge 3)\) entanglement. Specially, a large number of schemes for bidirectional controlled state teleportation are proposed using \(m\)-qubit entanglement \((m\in \{5,6,7\})\). Here, we propose a set of protocols to illustrate that it is possible to realize all these tasks related to controlled quantum communication using only Bell states and permutation of particles. As the generation and maintenance of a Bell state is much easier than a multi-partite entanglement, the proposed strategy has a clear advantage over the existing proposals. Further, it is shown that all the schemes proposed here may be viewed as applications of the concept of quantum cryptographic switch which was recently introduced by some of us. The performances of the proposed protocols as subjected to the amplitude damping and phase damping noise on the channels are also discussed.

Keywords

Controlled quantum communication Bidirectional controlled teleportation Bidirectional controlled remote state preparation Quantum cryptography Quantum cryptographic switch 

Notes

Acknowledgments

AP and KT thank Department of Science and Technology (DST), India for support provided through the DST Project No. SR/S2/LOP-0012/2010.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Jaypee Institute of Information TechnologyNoidaIndia

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