Abstract
In the existing semiquantum key distribution (SQKD) protocols, the both parties must measure qubits in some bases. In this paper, we show that the classical party’s measurement capability is not necessary by constructing an SQKD protocol without invoking the classical Alice’s measurement capability. In particular, we prove that the proposed SQKD protocol is completely robust against joint attacks. Compared with the existing SQKD protocols, the number of the quantum states sent by Alice and Bob is decreased.
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Acknowledgments
The authors are grateful to the referees for invaluable suggestions that help us improve the quality of the paper. This work is supported in part by the National Natural Science Foundation (Nos. 61272058, 61073054), the Natural Science Foundation of Guangdong Province of China (Nos. S2012040007324, 10251027501000004), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20100171110042), the Science and Technology Project of Jiangmen City of China (No. [2011]131), and the Foundation of Graduate Education Reform of Wuyi University (No. YJS-JGXM-14-02) and FCT PEst-OE/EEI/LA0008/2013 project namely through the IT internal project CVQuantum.
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Zou, X., Qiu, D., Zhang, S. et al. Semiquantum key distribution without invoking the classical party’s measurement capability. Quantum Inf Process 14, 2981–2996 (2015). https://doi.org/10.1007/s11128-015-1015-z
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DOI: https://doi.org/10.1007/s11128-015-1015-z