Abstract:Identification over quantum broadcast channels is considered. As opposed to the information transmission task, the decoder only identifies whether a message of his choosing was sent or not. This relaxation allows for a doubleexponential code size. An achievable identification region is derived for a quantum broadcast channel, and full characterization for the class of classicalquantum broadcast channels. The results are demonstrated for a depolarizing broadcast channel. Furthermore, the identification capacity… Show more
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