论文标题
信息限制的相关性：经典和量子系统的一般框架
Informationally restricted correlations: a general framework for classical and quantum systems
论文作者
论文摘要
我们介绍了新的方法和工具，以研究和表征来自具有信息限制的通信的准备和衡量实验的经典和量子相关性。我们考虑了最普遍的信息限制相关性，即允许发件人准备混合状态的统计混合物时形成的相关性，表明与贝尔非局部性发生的情况相反，混合状态可以优于纯净的状态。然后，我们利用这些工具来得出量子通信的信息内容，不同量子信息资源的见证人，并证明这些方法可用于为半设备独立的随机数生成器开发新的途径。
We introduce new methods and tools to study and characterise classical and quantum correlations emerging from prepare-and-measure experiments with informationally restricted communication. We consider the most general kind of informationally restricted correlations, namely the ones formed when the sender is allowed to prepare statistical mixtures of mixed states, showing that contrary to what happens in Bell nonlocality, mixed states can outperform pure ones. We then leverage these tools to derive device-independent witnesses of the information content of quantum communication, witnesses for different quantum information resources, and demonstrate that these methods can be used to develop a new avenue for semi-device independent random number generators.
