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Polarization-Encoding-Based Measurement-Device-Independent Quantum Key Distribution with a Single Untrusted Source |
| Chuan-Qi Liu, Chang-Hua Zhu**, Lian-Hui Wang, Lin-Xi Zhang, Chang-Xing Pei |
State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an 710071
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| Cite this article: |
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Chuan-Qi Liu, Chang-Hua Zhu, Lian-Hui Wang et al 2016 Chin. Phys. Lett. 33 100301 |
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Abstract Measurement-device-independent quantum key distribution (MDI-QKD) can be immune to all detector side-channel attacks and guarantee the information-theoretical security even with uncharacterized single photon detectors. MDI-QKD has been demonstrated in both laboratories and field-tests by using attenuated lasers combined with the decoy-state technique. However, it is a critical assumption that the sources used by legitimate participants are trusted in MDI-QKD. Hence, it is possible that a potential security risk exists. Here we propose a new scheme of polarization-encoding-based MDI-QKD with a single untrusted source, by which the complexity of the synchronization system can be reduced and the success rate of the Bell-state measurement can be improved. Meanwhile, the decoy-state method is employed to avoid the security issues introduced by a non-ideal single photon source. We also derive a security analysis of the proposed system. In addition, it seems to be a promising candidate for the implementation for QKD network in the near future.
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Received: 13 April 2016
Published: 27 October 2016
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| PACS: |
03.67.Ac
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(Quantum algorithms, protocols, and simulations)
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 61372076 and 61301171, and the 111 Project under Grant No B08038. |
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