Classical -Quantum Multiple Access Channel with Secrecy Constraint: One-shot Rate Region

Abstract

In this paper, we aim to study a -user quantum multiple access wiretap channel with an arbitrary number of wiretappers under one-shot setting. In this regard, we first introduce the general quantum multiple access wiretap channel and the simplified proposed channel. Then, we calculate an achievable secrecy rate region for the main channel with two users. The encoding process uses the superposition and wiretap coding techniques, and the decoding technique is based on the simultaneous decoder. Also, Convex splitting is used to satisfy security requirements. At last, we extend the results to the l-user case.

Keywords

• quantum channel
• wiretap channel
• hypothesis testing mutual information
• secrecy rate region
• multiple access channel