J. A. Lopez-Leyva, A. Talamantes-Alvarez, E. A. Mejia, J. Estrada, M. Ponce Camacho, V. Ramos Garcia, and L. Casemiro Oliveira, Fake calibration attack using a beam sampler in a continuous variable-quantum key distribution system, Rev. Mex. Fís. 66, (2020).