Quantifying nonclassical correlations relative to local channels

2025/11/10 by Xu, Cong, Li, Tao, Ren, Ruonan +2
#FOS: Physical sciences #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2511.06753

Abstract

Nonclassical correlations are significant physical resources with extensive applications in quantum information processing. We introduce the modified Wigner-Yanase-Dyson skew information of a quantum state relative to a quantum channel, and a quantitative measure of quantum correlations. Their basic properties are explored in detail. Through a specific example, we also compare our correlations measure with the existing one. Moreover, the correlations relative to various channels including the von Neumann measurements, the unitary channels and the twirling channels are analyzed.

Citations

• Matrix integrals over unitary groups: An application of Schur-Weyl duality
• Quantum entanglement
• Classical, quantum and total correlations
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Quantifying Entanglement

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