Figure 1From: Quantum encryption in phase space with displacement operatorsIllustration of TF-QKD scheme. CW is a continuous wave laser; \(\rho _{a}\) and \(\rho _{b}\) are the global randomized phase; \(\gamma _{a}\) and \(\gamma _{b}\) are the modulated phase encoding; L is the length of the fiber; \(D_{0}\) and \(D_{1}\) are the detectorsBack to article page