Author

Shao-Ming Fei

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Preprint Oct 2026

Unitary-accessible coherence-erasure distance: Exact qubit solution and a tight qutrit bound

We introduce the unitary-accessible coherence-erasure distance, which measures the minimum unitary-control cost required to transform a quantum state into an incoherent state without changing its spectrum. The target states are restricted to incoherent states on the same unitary orbit, leading to a geometry different f...

Dong-Ping Xuan, Hua Nan, Zhi-Xi Wang et al. · 0 citations

Open access Sep 2026

Multipartite k‐Entanglement Measures and Coherence

Characterizing the entanglement in multipartite quantum systems remains a central challenge in the theory of quantum entanglement. We establish a comprehensive framework for constructing k$k$ ‐entanglement measures by leveraging bipartite entanglement measures and general m$m$ ‐entanglement measures ( m≤k$m \le k$ ) wi...

Zi-Han Chen, Hui Zhao, Shao-Ming Fei et al. · Advanced Quantum Technologie... · 0 citations