Abstract
In this paper, an improved controlled bidirectional quantum teleportation protocol of the special three-qubit state is proposed. In a little bit more detail, under the control of the third supervisor Charlie, Alice wants to send one special three-qubit entangled state to Bob, and at the meantime, Bob also wants to transmit another special three-qubit entangled state to Alice. In other words, both Alice and Bob can be the sender and receiver simultaneously. To achieve this aim, a specific eleven-qubit entangled state is shared among Alice, Bob and Charlie in advance acting as the quantum channel. Then, Alice and Bob first implement the GHZ-state measurement and Bell-state measurement respectively, and following Charlie’s single-qubit measurement. Finally, upon the foregoing measurement results, Alice and Bob can respectively implement the specific unitary operators on their local particles to recover the initial state transmitted by the other.
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Acknowledgements
This work was supported by the Shanghai Science and Technology Project in 2020 under Grant No. 20040501500.
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Ya-Li Jiang and Ri-Gui Zhou conceived the theory and designed the protocol. Ya-Li Jiang and WenWen Hu wrote the paper and comparisons analysis, Dao-You Hao helps check the manuscript.
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Jiang, YL., Zhou, RG., Hao, DY. et al. Bidirectional Controlled Quantum Teleportation of Three-Qubit State by a New Entangled Eleven-Qubit State. Int J Theor Phys 60, 3618–3630 (2021). https://doi.org/10.1007/s10773-021-04935-5
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DOI: https://doi.org/10.1007/s10773-021-04935-5