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Quantum Bidirectional Teleportation 2 ↔ 2 or 2 ↔ 3 Qubit Teleportation Protocol Via 6-Qubit Entangled State

Abstract

In this paper, firstly we propose a new protocol for quantum bidirectional teleportation of two particles in a six-qubit entangled channel, which is based on GHZ measurement and unitary operation. Then, also based on the six-qubit entangled state channel, a protocol for quantum bidirectional teleportation of two-three particles is proposed. The protocol utilizes Toffoli gate to convert three-qubit states into two-qubit states and a single qubit, and the rest of the teleportation is the same as the first protocol. Finally, we introduce an auxiliary bit to restore the state of the sender. Both these proposed protocols are more efficient than others in the same situation, which will be compared at the end of the paper.

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Acknowledgements

This work is supported by the National Key R&D Plan under Grant No. 2018YFC1200200 and 2018YFC1200205, National Natural Science Foundation of China under Grant No. 61463016 and “Science and technology innovation action plan” of Shanghai in 2017 under Grant No. 17510740300. H.I. acknowledge the support by FDCT of Macau under grant 013/2013/A1, University of Macau under grants MRG022/IH/2013/FST and MYRG2014-00052-FST, and National Natural Science Foundation of China under grant No.11404415.

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Correspondence to Ri-Gui Zhou.

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Zhou, R., Li, X., Qian, C. et al. Quantum Bidirectional Teleportation 2 ↔ 2 or 2 ↔ 3 Qubit Teleportation Protocol Via 6-Qubit Entangled State. Int J Theor Phys 59, 166–172 (2020) doi:10.1007/s10773-019-04306-1

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Keywords

  • Quantum bidirectional teleportation
  • Six-qubit entangled channel
  • GHZ measurement
  • Toffoli gate