Fig. 4
From: Secure quantum remote state preparation of squeezed microwave states

Quantum one-time pad. a Scheme for the interpretation of the RSP setup in terms of the one-time pad. b Entropy difference δ = H(M) − H(M|C′) as a function of the feedforward gain Gf and angle γf. The optimal point is marked by the blue star. It is slightly shifted with respect to the previous measurements due to a modified cryogenic setup