论文标题
通过量子多访问频道的私人古典交流
Private Classical Communication over Quantum Multiple-Access Channels
论文作者
论文摘要
我们在量子多访问渠道上研究私人古典沟通。对于任意数量的发射器，我们得出了容量区域的正则表达。在可降解通道的情况下，我们为最佳可实现的总和率建立了一个单个字母的表达式，并证明该数量也对应于与可降解量子多cess频道的量子通信的最佳可实现的总和。在我们的可实现结果中，我们将可靠性和隐私约束分别通过量子侧信息和通用哈希进行处理。因此，我们还确定正在考虑的多用户编码问题只能通过点对点编码技术来处理。作为独立利益的副产品，我们针对量子侧信息得出了分布式剩余的哈希引理，以确保我们的可实现性结果隐私。
We study private classical communication over quantum multiple-access channels. For an arbitrary number of transmitters, we derive a regularized expression of the capacity region. In the case of degradable channels, we establish a single-letter expression for the best achievable sum-rate and prove that this quantity also corresponds to the best achievable sum-rate for quantum communication over degradable quantum multiple-access channels. In our achievability result, we decouple the reliability and privacy constraints, which are handled via source coding with quantum side information and universal hashing, respectively. Hence, we also establish that the multi-user coding problem under consideration can be handled solely via point-to-point coding techniques. As a by-product of independent interest, we derive a distributed leftover hash lemma against quantum side information that ensures privacy in our achievability result.
