期刊论文详细信息
IEEE Photonics Journal
FBG-Based Weak Coherent State and Entanglement-Assisted Multidimensional QKD
Ivan B. Djordjevic1 
[1] Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, USA;
关键词: Quantum key distribution (QKD);    Multidimensional QKD (MQKD);    Fiber Bragg gratings (FBGs);    Entanglement assisted MQKD protocols;    Weak coherent state-based MQKD protocols.;   
DOI  :  10.1109/JPHOT.2018.2860524
来源: DOAJ
【 摘 要 】

In this paper, we propose several fiber Bragg gratings (FBGs) based on both weak coherent state (WCS) and entanglement-assisted (EA) multidimensional QKD (MQKD) protocols with mutually unbiased bases (MUBs) derived from the complex Hadamard matrices. We also propose how to implement them by using FBGs with orthogonal impulse responses, derived from Slepian sequences. The proposed FBG-based protocols are capable of simultaneously achieving unprecedented spectral efficiency and secret-key rates in long-distance quantum communication. Regarding the WCS protocols, random base selection and FGB-MUB-based protocols are introduced. Regarding EA protocols, we introduce a generic class of FBG-based N-dimensional protocols and describe the corresponding FBG-based encoders and decoders. The security analysis of the proposed MQKD protocols is further performed by taking into account FBG fabrication imperfections, modeled by the L-neighbor model. It has been shown that the proposed MQKD protocols significantly outperform the conventional two-dimensional QKD protocols, and impose less stringent bandwidth requirements compared to multidimensional time-frequency and time-bin protocols.

【 授权许可】

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