A general method for selecting quantum channel for bidirectional controlled state teleportation and other schemes of controlled quantum communication

A general method for selecting quantum channel for bidirectional controlled state teleportation... Recently, a large number of protocols for bidirectional controlled state teleportation (BCST) have been proposed using n-qubit entangled states ( $$n\in \{5,6,7\}$$ n ∈ { 5 , 6 , 7 } ) as quantum channel. Here, we propose a general method of selecting multiqubit $$(n>4)$$ ( n > 4 ) quantum channels suitable for BCST and show that all the channels used in the existing protocols of BCST can be obtained using the proposed method. Further, it is shown that the quantum channels used in the existing protocols of BCST form only a negligibly small subset of the set of all the quantum channels that can be constructed using the proposed method to implement BCST. It is also noted that all these quantum channels are also suitable for controlled bidirectional remote state preparation. Following the same logic, methods for selecting quantum channels for other controlled quantum communication tasks, such as controlled bidirectional joint remote state preparation and controlled quantum dialogue, are also provided. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

A general method for selecting quantum channel for bidirectional controlled state teleportation and other schemes of controlled quantum communication

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-015-1124-8
Publisher site
See Article on Publisher Site

Abstract

Recently, a large number of protocols for bidirectional controlled state teleportation (BCST) have been proposed using n-qubit entangled states ( $$n\in \{5,6,7\}$$ n ∈ { 5 , 6 , 7 } ) as quantum channel. Here, we propose a general method of selecting multiqubit $$(n>4)$$ ( n > 4 ) quantum channels suitable for BCST and show that all the channels used in the existing protocols of BCST can be obtained using the proposed method. Further, it is shown that the quantum channels used in the existing protocols of BCST form only a negligibly small subset of the set of all the quantum channels that can be constructed using the proposed method to implement BCST. It is also noted that all these quantum channels are also suitable for controlled bidirectional remote state preparation. Following the same logic, methods for selecting quantum channels for other controlled quantum communication tasks, such as controlled bidirectional joint remote state preparation and controlled quantum dialogue, are also provided.

Journal

Quantum Information ProcessingSpringer Journals

Published: Sep 18, 2015

References

  • Hierarchical quantum-information splitting
    Wang, XW; Xiac, L-X; Wangd, Z-Y; Zhanga, D-Y
  • Hierarchical quantum communication
    Shukla, C; Pathak, A

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