标题： 基于量子费舍尔信息的纠缠判据 显示英文标题

标题： Entanglement Criteria Based on Quantum Fisher Information

摘要： 为了优化纠缠检测，我们通过在测量轨道上最大化量子费舍尔信息（QFI），将计量学操作的纠缠条件形式化为量子费舍尔信息中的条件。 具体来说，我们考虑了两类典型的局部可观测量，即 局部正交可观测量和对称信息完备正算子值测度。 结果表明，对称信息完备正算器值测度在纠缠检测中优于局部正交可观测量，这在某种程度上暗示了对称信息完备正算子值测度在量子信息处理中尚未确认的普遍优势。 显示英文摘要

摘要： To optimize the entanglement detection, we formulate the metrologically operational entanglement condition in quantum Fisher information by maximizing the QFI on the measurement orbit. Specifically, we consider two classes of typical local observables, i.e. the local orthonormal observables and symmetric informationally complete positive operator-valued measures. Result shows that the symmetric informationally complete positive operator-valued measures are superior to local orthonormal observables in entanglement detection, which in some sense hints the yet unconfirmed generally superiority of symmetric informationally complete positive operator-valued measures in quantum information processing.