Figure 4

(a) Assume that Alice sends two successive states \(x_{1}\) and \(x_{2}\) (\(x_{1}>0\), \(x_{2}>0\), the yellow dot) and Bob discriminates the four possible states after Alice has sent him the side information over the classical authenticated channel. (a1)-(a3) corresponds to the four states in slice reconciliation, sign reconciliation, and multidimensional reconciliation, respectively. [52] (b) Flow chart of reverse multidimensional reconciliation. The inputs X and Y are a set of correlated but not identical Gaussian variables. The outputs Corrected Bits and u are an identical set of corrected key strings