Author

M. Gessner

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Preprint Sep 2026

Quantum Barankin bounds beyond local unbiasedness: Analytic results for Gaussian states via a right-division framework

We propose a quantum version of the Barankin bound as an alternative to the quantum Cram\'er-Rao bound for quantum parameter estimation. The quantum Barankin bound provides a lower bound on the mean squared error of estimators satisfying arbitrarily chosen bias constraints at arbitrarily chosen parameter points. In par...

Maximilian Reichert, Javier Navarro, G. Adesso et al. · 0 citations

Preprint Jul 2026

Irreducible Architectures of Multipartite Entanglement

Multipartite entanglement is commonly characterized by scalar notions such as separability and entanglement depth, which do not resolve the distribution of entangled cluster sizes. For mixed states, we introduce formation profiles that assign weights to the entanglement architectures appearing in pure-state decompositi...

A. Smerzi, M. Gessner · 0 citations