Author

Julius A. Zeiss

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Preprint Sep 2026

Optimal entanglement-assisted source coding under a balanced-difference promise

Entanglement can reduce the communication required for coding tasks, but establishing the minimum achievable cost is essential to understanding its limits. We address this question in a zero-error source-coding task where Alice receives a word and Bob knows an unordered pair of candidates containing it. Alice does not...

Julius A. Zeiss · 0 citations

Preprint Jul 2026

Fixed points in de Finetti hierarchies

De Finetti theorems convert permutation symmetry into approximate mixtures of product states and thereby justify a wide range of reductions in classical and quantum statistics. In this work we study de Finetti hierarchies in which the feasible states are additionally constrained to be fixed points of quantum channels,...

Gereon Koßmann, Julius A. Zeiss · 0 citations