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4 November 2010 Principles and improvements of quadrature-based QKD
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An overview of quadrature-based quantum key distribution is provided. Beginning from the comparison between single-photon schema and continuous variable schema, the article focuses on the classical and state-of-art protocols. Protocols' main procedures and security analysis are introduced, which includes the methods under individual attack and collective attack. Then recent development of unconditional security proof is introduced including the optimality of Gaussian attack and de Finetti theorem. Introduction towards discrete modulated schemas' security proof is also made. At last, the article discusses experimental realization of various protocols and the main trend in this field.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wenhao Hu, Di Shu, Daqing Wang, and Yu Liu "Principles and improvements of quadrature-based QKD", Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460K (4 November 2010);

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