基于量子费雪信息的纠缠标准

IF 2.3 3区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Physics Letters A Pub Date : 2024-10-24 DOI:10.1016/j.physleta.2024.130003
Ao-Xiang Liu , Ma-Cheng Yang , Cong-Feng Qiao
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引用次数: 0

摘要

为了优化纠缠检测,我们通过最大化测量轨道上的 QFI 来制定量子费雪信息中的计量操作纠缠条件。具体来说,我们考虑了两类典型的局部观测量,即局部正交观测量和对称信息完整的正算子值量度。结果表明,对称信息完备的正算子值量度在纠缠检测中优于局部正态观测量度,这在某种意义上暗示了对称信息完备的正算子值量度在量子信息处理中尚未被证实的普遍优越性。
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Entanglement criteria based on quantum Fisher information
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.
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来源期刊
Physics Letters A
Physics Letters A 物理-物理:综合
CiteScore
5.10
自引率
3.80%
发文量
493
审稿时长
30 days
期刊介绍: Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.
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