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Passive Decoy-State Reference-Frame-Independent Quantum Key Distribution with Heralded Single-Photon Source |
| Jia-Ji Li1,2, Yang Wang1,2, Hong-Wei Li1,2, Peng Peng1,2, Chun Zhou1,2, Mu-Sheng Jiang1,2, Hong-Xin Ma1,2, Lin-Xi Feng1,2, Wan-Su Bao1,2** |
1Henan Key Laboratory of Quantum Information and Cryptography, Zhengzhou Information Science and Technology Institute, Zhengzhou 450001
2Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026
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| Cite this article: |
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Jia-Ji Li, Yang Wang, Hong-Wei Li et al 2017 Chin. Phys. Lett. 34 120301 |
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Abstract Reference-frame-independent (RFI) quantum key distribution (QKD) is a protocol which can share unconditional secret keys between two remote users without the alignment of slowly varying reference frames. We propose a passive decoy-state RFI-QKD protocol with heralded single-photon source (HSPS) and present its security analysis. Compared with RFI QKD using a weak coherent pulse source (WCPS), numerical simulations show that the passive decoy-state RFI QKD with HSPS performs better not only in secret key rate but also in secure transmission distance. Moreover, our protocol is robust against the relative motion of the reference frames as well as RFI QKD with the WCPS. In addition, we also exploit Hoeffding's inequality to investigate the finite-key effect on the security of the protocol.
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Received: 06 September 2017
Published: 24 November 2017
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| PACS: |
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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03.67.-a
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(Quantum information)
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| Fund: Supported by the National Basic Research Program of China under Grant No 2013CB338002, and the National Natural Science Foundation of China under Grant Nos 61505261, 61675235, 61605248 and 11304397. |
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