3 papers
quant-ph2026
No-local-broadcasting theorem for non-signalling behaviours and assemblages
Adrian Solymos, Carlos Vieira, Cristhiano Duarte +1
The no-broadcasting theorem is a fundamental result in quantum information theory. It guarantees that a class of attacks on quantum protocols, based on eavesdropping and indiscrimi…
quant-ph2026
Generalized group designs: constructing novel unitary 2-, 3- and 4-designs
Ãgoston Kaposi, Zoltán Kolarovszki, Adrián Solymos +1
Unitary designs are essential tools in several quantum information protocols. Similarly to other design concepts, unitary designs are mainly used to facilitate averaging over a rel…
quant-ph2025
Extendibility of Brauer states
Adrian Solymos, Dávid Jakab, Zoltán Zimborás
We investigate the extendibility problem for Brauer states, focusing on the symmetric two-sided extendibility and the de Finetti extendibility. By employing the representation theo…