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quant-ph2026
Complete parameterization and parameter-space topology of discrete Wigner representations on phase space
Lucky K. Antonopoulos, Nicolas C. Menicucci
Toroidal discrete Wigner functions (DWFs) for finite-dimensional systems are non-unique. We completely parameterize and topologically classify the labeled single-qudit ${d\times d}…
quant-ph2026
Gaussian dynamics in the double Siegel disk
Giacomo Pantaleoni, Nicolas C. Menicucci
We show that deterministic multimode Gaussian channels admit a symmetric-space description. Passing from the n-mode Siegel disk to a doubled version of that space lets general Gaus…