Classical-Quantum Multiple Access Wiretap Channel with Common Message: One-Shot Rate Region

In this paper, the classical-quantum multiple access wiretap channel with a common message is studied under the one-shot setting. In this regard, an inner bound is derived using simultaneous decoding. One important problem in multi-terminal quantum networks is the nonexistence of a proven simultaneous decoder for decoding more than two messages simultaneously. The main focus of this paper is to construct a simultaneous decoder for the one-shot setting.