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Gaussian quantum channels beyond the Gaussian functional form: full characterization of the one-mode case

URN to cite this document:
Davalos, David ; Moreno, Camilo ; Urbina, Juan Diego ; Pineda, Carlos
PDF - Draft Version
arXiv PDF (19.02.2019)
Date of publication of this fulltext: 25 Feb 2019 09:54


We study one-mode Gaussian quantum channels in continuous-variable systems by performing a black-box characterization using complete positivity and trace preserving conditions, and report the existence of two subsets that do not have a functional Gaussian form. Our study covers as particular limit the case of singular channels, thus connecting our results with their known classification scheme ...


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