Asymptotic security of binary modulated continuous-variable quantum key distribution under collective attacks

作     者：Yi-Bo Zhao Matthias Heid Johannes Rigas Norbert Lütkenhaus 

作者机构：Key Lab of Quantum Information University of Science and Technology of China (CAS) Hefei Anhui 230026 China Quantum Information Theory Group Institut für Theoretische Physik I and Max-Planck Research Group Institute of Optics Information and Photonics Universität Erlangen-Nürnberg Staudtstraße 7/B2 91058 Erlangen Germany Institute for Quantum Computing and Department of Physics and Astronomy University of Waterloo 200 University Ave. West Waterloo Ontario Canada N2L 3G1 Departamento de Óptica Facultad de Física Universidad Complutense 28040 Madrid Spain 

出 版 物：《Physical Review A》 (物理学评论A辑：原子、分子和光学物理学)

年 卷 期：2009年第79卷第1期

页      面：012307-012307页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Fundamental Research Program of China [2006CB921900] National Natural Science Foundation of China [60537020, 60621064] Knowledge Innovation Project of the Chinese Academy of Sciences (CAS) European Union through the IST Integrated Project SECOQC NSERC Innovation Platform Quantum Works NSERC Discovery Grant Spanish Research Directorate [FIS2005-06714] 

主　　题：cryptographic protocols homodyne detection quantum cryptography telecommunication security STATES 

摘      要：We estimate a lower bound to the secret key rate of a binary modulated continuous variable quantum key distribution scheme. We consider the collective attack scenario with quantum channels that impose arbitrary noise on the exchanged signals. The analysis is done in the infinite key limit. Bob performs ideal homodyne measurements on the received states and the two honest parties employ a reverse reconciliation procedure in the classical postprocessing step of the protocol.