In this paper, we want to investigate classical-quantum multiple access wiretap channels (CQ-MA-WTC) under one-shot setting. In this regard, we analyze the CQ-MA-WTC using simultaneous position-based decoder for reliable decoding and using a newly introduced technique in order to decode securely. Also, for the sake of comparison, we analyze the CQ-MA-WTC using Sen's one-shot joint typicality lemma for reliable decoding. The simultaneous position-based decoder tends to a multiple hypothesis testing problem. Also, using convex splitting to analyze the privacy criteria in a simultaneous scenario becomes problematic. To overcome both problems, we first introduce a new channel that can be considered as a dual to the CQ-MA-WTC. This channel is called a point-to-point quantum wiretap channel with multiple messages (PP-QWTC). In the following, as a strategy to solve the problem, we also investigate and analyze quantum broadcast channels (QBCs) under the one-shot setting.
翻译:在本文中,我们想在一拍的设置下调查古典-量子多存取窃听频道(CQ-MA-WTC),在这方面,我们使用同时定位解码器分析CQ-MA-WTC,以便可靠解码,并使用新引入的技术安全解码。为了比较起见,我们用Sen的单点共同典型Lemma来分析CQ-MA-WTC,以便可靠解码。同时定位解码器倾向于多重假设测试问题。此外,我们利用 convex分离来同时分析隐私标准也成问题。为了克服这两个问题,我们首先引入了可以被视为CQ-MA-WTC双轨的新频道。这个频道被称为带有多条电文的点对点量子窃听频道(PP-QWTC)。在下面,作为解决问题的战略,我们还在一发制下调查并分析量子广播频道(QBCs)。