Abstract
In this paper, the new protocol for quantum private comparison of equality (QPCE) is investigated. Instead of using the entanglement, we only utilize the single photon to efficiently realize the comparison of secret information. Furthermore, a more feasible QPCE protocol, which can be successfully performed via the collective amplitude damping channel, is put forward. In our QPCE protocols, a semi-honest third party (TP) is involved. It is an appealing advantage in the practical implementation of protocol. Our QPCE protocols can resist various kinds of attacks from both the outside eavesdroppers and the inside participants, even the semi-honest TP.
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Acknowledgments
Project supported by the National Natural Science Foundation of China (Nos. 61003287, 61170272, 61272514), the Specialized Research Fund for the Doctoral Program of Higher Education (20100005120002), the Fok Ying Tong Education Foundation (No. 131067), National Science Foundation of China Innovative Grant (70921061), the CAS/SAFEA International Partnership Program for Creative Research Teams and the Fundamental Research Funds for the Central Universities (No. BUPT2012RC0221).
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Chen, XB., Su, Y., Niu, XX. et al. Efficient and feasible quantum private comparison of equality against the collective amplitude damping noise. Quantum Inf Process 13, 101–112 (2014). https://doi.org/10.1007/s11128-012-0505-5
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DOI: https://doi.org/10.1007/s11128-012-0505-5