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

Applications of quantum cryptographic switch: various tasks related to controlled quantum... 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 $$n$$ n -qubit $$(n\ge 3)$$ ( n ≥ 3 ) entanglement. Specially, a large number of schemes for bidirectional controlled state teleportation are proposed using $$m$$ m -qubit entanglement $$(m\in \{5,6,7\})$$ ( m ∈ { 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

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

, Volume 14 (7) – Apr 22, 2015
18 pages

Publisher
Springer US
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/s11128-015-0987-z
Publisher site
See Article on Publisher Site

### References

• Hierarchical quantum-information splitting
Wang, XW; Xia, L-X; Wang, Z-Y; Zhang, D-Y
• Hierarchical quantum communication
Shukla, C; Pathak, A
• Bidirectional controlled quantum teleportation and secure direct communication using five-qubit entangled state
Li, Y-H; Li, X-L; Sang, M-H; Nie, Y-Y; Wang, Z-S
• Maximally efficient protocols for direct secure quantum communication
Banerjee, A; Pathak, A
• Two-step orthogonal-state-based protocol of quantum secure direct communication with the help of order-rearrangement technique
Yadav, P; Srikanth, R; Pathak, A
• Quantum dialogue
An, NB
• On the group-theoretic structure of a class of quantum dialogue protocols
Shukla, C; Kothari, V; Banerjee, A; Pathak, A

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