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New quantum dialogue protocol based on continuous-variable two-mode squeezed vacuum states

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Abstract

A new quantum dialogue protocol is designed by using the continuous-variable two-mode squeezed vacuum states due to its entanglement property. The two communication parties encode their own secret information into the entangled optical modes with the translation operations. Each communication party could deduce the secret information of their counterparts with the help of his or her secret information and the Bell-basis measurement results. The security of the proposed quantum dialogue protocol is guaranteed by the correlation between two-mode squeezed vacuum states and the decoy states performed with translation operations in randomly selected time slots. Compared with the discrete variable quantum dialogue protocols, the proposed continuous-variable quantum dialogue protocol is easy to realize with perfect utilization of quantum bits.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Grant Nos. 61561033 and 61462061), the China Scholarship Council (Grant No. 201606825042), the Department of Human Resources and Social security of Jiangxi Province, the Major Academic Discipline and Technical Leader of Jiangxi Province (Grant No. 20162BCB22011), and the Natural Science Foundation of Jiangxi Province (Grant No. 20151BAB207002).

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Authors and Affiliations

  1. Department of Electronic Information Engineering, Nanchang University, Nanchang, 330031, China

    Nan-Run Zhou & Li-Hua Gong

  2. Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, USA

    Nan-Run Zhou & Li-Hua Gong

  3. Department of Physics, Nanchang University, Nanchang, 330031, China

    Jian-Fu Li & Zhen-Bo Yu

  4. Department of Information Technology, Al-Zahra College for Women, Muscat, Oman

    Ahmed Farouk

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  1. Nan-Run Zhou
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  2. Jian-Fu Li
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  3. Zhen-Bo Yu
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  4. Li-Hua Gong
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  5. Ahmed Farouk
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Correspondence to Nan-Run Zhou.

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Zhou, NR., Li, JF., Yu, ZB. et al. New quantum dialogue protocol based on continuous-variable two-mode squeezed vacuum states. Quantum Inf Process 16, 4 (2017). https://doi.org/10.1007/s11128-016-1461-2

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