论文标题
通过固定测量设置对不同的纠缠资源进行自我测试
Self-testing of different entanglement resources via fixed measurement settings
论文作者
论文摘要
自我测试是指状态独立表征和测量值，它可以使量子信息处理任务的安全性与设备内部执行的操作无关。量子状态位于自我测试作为关键资源的核心。但是，对于不同的纠缠状态，通常应在自我测试配方中进行不同的测量设置。这可能会导致测量资源的冗余。在这项工作中，我们使用固定的两个二进制测量结果，并回答以下问题：哪些状态可以通过相同的设置进行自我测试。通过使用正方形分解方法总和的广义倾斜钟钟操作员的结构，我们表明，可以通过相同的测量设置对一个两Q Qubited状态的家族进行自我测试。鲁棒性分析表明我们的方案对于实验仪器是可行的。此外，我们的结果可以应用于各种量子信息处理任务。
Self-testing, which refers to device independent characterization of the state and the measurement, enables the security of quantum information processing task certified independently of the operation performed inside the devices. Quantum states lie in the core of self-testing as key resources. However, for the different entangled states, usually different measurement settings should be taken in self-testing recipes. This may lead to the redundancy of measurement resources. In this work, we use fixed two-binary measurements and answer the question that what states can be self-tested with the same settings. By investigating the structure of generalized tilted-CHSH Bell operators with sum of squares decomposition method, we show that a family of two-qubit entangled states can be self-tested by the same measurement settings. The robustness analysis indicates that our scheme is feasible for practical experiment instrument. Moreover, our results can be applied to various quantum information processing tasks.
