Passive scheme analysis for resolving an untrusted source problem in quantum key distribution
نویسندگان
چکیده
As a practical method, the passive scheme has been used to analyze the security of an untrusted source in quantum key distribution. In the passive scheme, one can utilize average-photon-number (APN) monitor, photon-number-distribution (PND) monitor and photon-number analyzer (PNA) to achieve the unconditional security with using BB84 protocol or decoy-state protocol. In this paper, the ClopperPearson confidence interval is estimated to analyze the statistical fluctuation due to finite number of measurements. Two cases of independent additive detection noise, i.e., Poissonian and Gaussian noise, are considered and discussed in the passive scheme, respectively. Our analysis can be directly applied in the “Plug & Play” QKD system. PACS numbers: 03.67.Dd, 03.67.Hk Passive scheme analysis for resolving an untrusted source problem in quantum key distribution2
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Security analysis of an untrusted source for quantum key distribution: passive approach
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