论文标题
自一致的断层扫描和测量设备独立密码学
Self-consistent tomography and measurement-device independent cryptography
论文作者
论文摘要
量子力学中的一个反复出现的问题是估计量子系统的状态或应用于它的测量算子的状态。如果我们想估算两者，那么困难是国家和测量始终出现在一起：为了估计状态，我们必须使用测量值；为了估计测量操作员，我们必须使用状态。这种量子估计实验的数据以测量频率的形式出现。理想情况下，测得的平均频率可以归因于平均状态和平均测量算子。如果不是这种情况，我们会有相关的状态预先计算和测定（垃圾邮件）错误。我们扩展了一些用于检测此类相关错误的测试，以适用于一个密码学方案，在该方案中，双方都信任他们的各个状态，而不是在联合状态下进行的测量。
A recurring problem in quantum mechanics is to estimate either the state of a quantum system or the measurement operator applied to it. If we wish to estimate both, then the difficulty is that the state and the measurement always appear together: to estimate the state, we must use a measurement; to estimate the measurement operator, we must use a state. The data of such quantum estimation experiments come in the form of measurement frequencies. Ideally, the measured average frequencies can be attributed to an average state and an average measurement operator. If this is not the case, we have correlated state-preparation-and-measurement (SPAM) errors. We extend some tests developed to detect such correlated errors to apply to a cryptographic scenario in which two parties trust their individual states but not the measurement performed on the joint state.
