Polarization-Encoding-Based Measurement-Device-Independent Quantum Key Distribution with a Single Untrusted Source
| Autor: | Chuan-Qi Liu, Changhua Zhu, Changxing Pei, Linxi Zhang, Lian-Hui Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Scheme (programming language)
Security analysis Computer science Detector General Physics and Astronomy Quantum key distribution Polarization (waves) 01 natural sciences 010305 fluids & plasmas Measurement device Computer engineering Encoding (memory) Single-photon source 0103 physical sciences 010306 general physics computer computer.programming_language |
| Zdroj: | Chinese Physics Letters. 33:100301 |
| ISSN: | 1741-3540 0256-307X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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