Heralded Single Photon Source-Based Decoy-State Quantum Key Distribution with Dual Detectors
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概要
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In practical quantum key distribution (QKD) systems, the heralded single photon source (HSPS) based on parametric down-conversion (PDC) has attracted significant attentions from many researchers because its various advantages compared to the weak coherent source. We propose a heralded single photon source-based decoy-state QKD with dual detectors and demonstrate in a theoretical simulation that this method improves the performance of QKD system. The secure key generation rate is increased significantly with our proposal both in thermal and Poisson distributions of photons. The secure key rate produced by our scheme is higher than the state of the art key rate of current high-speed QKD system. The decoy-state QKD system using the heralded single photon source with dual detectors can be an important alternative for the present practical QKD systems.
- 2010-05-25
著者
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Feng Yu
Department Of Molecular Pharmacology State Key Laboratory Of Drug Research Shanghai Institute Of Mat
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Seunghwan Kim
Department of Physics, Inha University, Incheon 402-751, Korea
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Yu Feng
Department of Physics, Inha University, Incheon 402-751, Korea
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Lee Seounghun
Department of Physics, Inha University, Incheon 402-751, Korea
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Kim Semin
Department of Physics, Inha University, Incheon 402-751, Korea
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Kyonghon Kim
Department of Physics, Inha University, Incheon 402-751, Korea
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Seounghun Lee
Department of Physics, Inha University, Incheon 402-751, Korea
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FENG Yu
Department of Chemistry and Ecological Engineering, Guangxi University for Nationalities
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Semin Kim
Department of Physics, Inha University, Incheon 402-751, Korea
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