Author

Jian Wu

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Preprint Sep 2026

Universal Nonuniform Sampling of Positive Operator Orbits via Complete Stein--Pick Criteria and Density

We study nonuniform sampling for positive operator systems. Given a locally finite set \(T\subset[0,\infty)\), we determine when exact observability of \(\{CA^n\}_{n\in\mathbb N}\) implies exact observability of \(\{CA^t\}_{t\in T}\) for every positive operator \(A\) and every observation operator \(C\). Using the Stei...

Jian Wu · 1 citation · ⚡1

Preprint Sep 2026

Loss-Resilient Quantum Networking with Dicke Entanglement

Multipartite entanglement can endow a quantum network with capabilities unavailable classically, yet their evolution under progressively reduced physical and informational access remains largely unexplored. Here we realize the first eight-photon half-excitation Dicke state, with a fidelity of 0.922(11), and use it to i...

Bo-Wen Wang, Hong-Yu Yang, Jia-Cheng Sun et al. · 0 citations