2 papers
quant-ph2026
Convex combinations of bosonic pure-loss channels
Giuseppe Catalano, Marco Fanizza, Francesco Anna Mele +2
The pure-loss channel is a fundamental model for describing noise in bosonic quantum platforms. It is characterised by a single parameter, the transmissivity, which quantifies the…
quant-ph2026
Obstructions to universality in globally controlled qubit graphs
Roberto Gargiulo, Roberto Menta, Vittorio Giovannetti +1
Global control offers a promising route to scalable quantum computing. A recent conjecture by Hu et al. (arXiv:2508.19075) proposes that any connected qubit graph equipped with glo…