Abstract
This work presents a strategy for constructing long-distance quantum communications among a number of remote users through collective-noise channel. With the assistance of semi-honest quantum certificate authorities (QCAs), the remote users can share a secret key through fault-tolerant entanglement swapping. The proposed protocol is feasible for large-scale distributed quantum networks with numerous users. Each pair of communicating parties only needs to establish the quantum channels and the classical authenticated channels with his/her local QCA. Thus, it enables any user to communicate freely without point-to-point pre-establishing any communication channels, which is efficient and feasible for practical environments.
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The authors would like to thank the anonymous reviewers for their valuable comments to improve the quality of the work.
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Tsai, CW., Lin, J. Fault-tolerant Remote Quantum Entanglement Establishment for Secure Quantum Communications. Int J Theor Phys 55, 3200–3206 (2016). https://doi.org/10.1007/s10773-016-2950-x
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DOI: https://doi.org/10.1007/s10773-016-2950-x