论文标题
证明量子状态崩溃中的随机性
Certifying randomness in quantum state collapse
论文作者
论文摘要
量子测量引起的状态崩溃的不可预测的过程使量子随机性产生可能。在本文中，我们探讨了随机性产生与状态崩溃之间的定量联系，并在假设下提供了随机性验证协议：（i）源和测量设备之间的独立性以及（ii）lüders倒塌状态的规则。不涉及大数学机制，可以直接估计产生的量子随机性的量，而扰动效应源自状态崩溃。在协议中，我们可以采用不完全信任的一般测量。配备了可信赖的投影测量值，我们可以进一步优化随机性生成性能。我们的协议还显示出高效率，并且比基于不确定性关系的协议产生的随机性产生速率更高。我们希望我们的结果为理解和产生量子随机性提供新的见解
The unpredictable process of state collapse caused by quantum measurements makes the generation of quantum randomness possible. In this paper, we explore the quantitive connection between the randomness generation and the state collapse and provide a randomness verification protocol under the assumptions: (I) independence between the source and the measurement devices and (II) the Lüders' rule for collapsing state. Without involving heavy mathematical machinery, the amount of genereted quantum randomness can be directly estimated with the disturbance effect originating from the state collapse. In the protocol, we can employ general measurements that are not fully trusted. Equipped with trusted projection measurements, we can further optimize the randomness generation performance. Our protocol also shows a high efficiency and yields a higher randomness generation rate than the one based on uncertainty relation. We expect our results to provide new insights for understanding and generating quantum randomness
