Stronger Entanglement Criteria Based on Quantum Fisher Information

• URL: http://arxiv.org/abs/2407.15413v1
• Date: Mon, 22 Jul 2024 06:41:52 GMT
• Title: Stronger Entanglement Criteria Based on Quantum Fisher Information
• Authors: Ao-Xiang Liu, Ma-Cheng Yang, Cong-Feng Qiao,
• Abstract summary: We consider two classes of typical local observables, i.e. the local orthonormal observables (LOO) and symmetric informationally complete positive operator-valued measures (SIC-POVM) The SIC-POVM is superior to LOO in entanglement detection, which in some sense hints the yet unconfirmed generally superiority of SIC-POVM in quantum information processing.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: To optimize the entanglement detection, we formulate the metrologically operational entanglement condition in quantum Fisher information(QFI) by maximizing the QFI on the measurement orbit. Specifically, we consider two classes of typical local observables, i.e. the local orthonormal observables (LOO) and symmetric informationally complete positive operator-valued measures (SIC-POVM). Result shows that the SIC-POVM is superior to LOO in entanglement detection, which in some sense hints the yet unconfirmed generally superiority of SIC-POVM in quantum information processing.

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