Author

L. S'anchez-Soto

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Preprint Jul 2026

Wigner negativity and stellar rank for SU(1,1) states

Quasiprobability distributions for systems endowed with SU(1,1) dynamical symmetry have received surprisingly little attention, despite the central role of this symmetry in two-photon physics, squeezed states, and nonlinear interferometry. Here, we fill this gap by constructing a full covariant family of $s$-ordered qu...

A. B. Klimov, Ariana S. Muñoz, Gerd Leuchs et al. · 1 citation

Preprint Aug 2026

Spin-coherent quantum designs

Coherent states bridge the gap between quantum and classical physics, but their overcomplete and nonorthogonal nature makes it difficult to identify the minimal discrete set needed to reconstruct quantum information. Finite spin-coherent tomography and discrete coherent-state operator bases are known, but here we addre...

Marcin Rudziński, A. Goldberg, A. B. Klimov et al. · 0 citations