4 papers
Density and Spectral Criteria for Universal Nonuniform Sampling of Positive Operator Orbits
Jian Wu
We characterize locally finite sets \(T\subset[0,\infty)\) that preserve exact observability from nonnegative integer times for every bounded positive operator \(A\) and bounded ob…
Power Stability of Finitely Generated Dynamical Frames for Positive Operators
Jian Wu
Let \( Λ=\{λ_j\}_{j\in\mathbb N}\subset[0,1) \) be a finite union of Carleson sequences, and let \( Λ^p=\{λ_j^p\}_{j\in\mathbb N} \) for \(p>0\). We prove that \(Λ\) and \(Λ^p\) ad…
Carleson Interpolation, Boundary Rigidity, and Classification of Spectral Transformations Preserving Diagonal Operator Orbit Frames
Jian Wu
Maps of the unit disk preserve frame generator sets for single orbits of normal diagonal operators exactly when they preserve Carleson interpolating sequences bidirectio…
Experimental Multipartite Entanglement Detection With Minimal-Size Correlations
Dian Wu, Fei Shi, Jia-Cheng Sun +5
Multiparticle entanglement is a valuable resource for quantum technologies, including measurement based quantum computing, quantum secret sharing, and a variety of quantum sensing…