3 papers
quant-ph2026
Phase-Space Representations of Quantum Error-Correcting Codes
Enrico Bozzetto, Jonte R. Hance
We connect the structure theorem for quasiprobability representations to quantum error correction. For a code space invariant under a subgroup of an extended Weyl-Heisenberg group,…
quant-ph2026
Classical Limit: Dissipation of Spekkens' Generalised Contextuality under Decoherence
Enrico Bozzetto, Jonte R. Hance
When does a decohering quantum system become classical? Generalised noncontextuality gives one criterion, for scenarios rich enough in preparations: a system is classical once its…
quant-ph2026
Warring Contextualities - Provably Classical vs Provably Nonclassical
Enrico Bozzetto, Jonte R. Hance
In the literature, there are two differing definitions of contextuality: Kochen and Specker's, and Spekkens' (or ``generalised''). However, researchers using one of these definitio…