Security Analysis of Unidimensional Continuous-Variable Quantum Key Distribution Using Uncertainty Relations
نویسندگان
چکیده
We study the equivalence between the entanglement-based scheme and prepare-and-measure scheme of unidimensional (UD) continuous-variable quantum key distribution protocol. Based on this equivalence, the physicality and security of the UD coherent-state protocols in the ideal detection and realistic detection conditions are investigated using the Heisenberg uncertainty relation, respectively. We also present a method to increase both the secret key rates and maximal transmission distances of the UD coherent-state protocol by adding an optimal noise to the reconciliation side. It is expected that our analysis will aid in the practical applications of the UD protocol.
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عنوان ژورنال:
- Entropy
دوره 20 شماره
صفحات -
تاریخ انتشار 2018