Andreas Winter

activity

20242026

collaborators

Showing quant-phShow all

3 papers · 1 filter

quant-ph2026

Non-Multiplicativity of the Holevo Barycenter of Quantum Channels

Sayantan Chakraborty, Stefano Mancini, Leonardo Rossetti +1

The Holevo barycenter of a quantum channel is the unique output state obtained as the average output of any ensemble achieving the Holevo capacity. Given two quantum channels, the…

quant-ph2026

Composing $p$ -adic qubits: from representations of SO(3) $_{p}$ to entanglement and universal quantum logic gates

Ilaria Svampa, Sonia L'Innocente, Stefano Mancini +1

In the context of $p$ -adic quantum mechanics, we investigate composite systems of $p$ -adic qubits and $p$ -adically controlled quantum logic gates. We build on the notion of a singl…

quant-ph2025

Observational entropy of quantum correlations and entanglement

Leonardo Rossetti, Stefano Mancini, Andreas Winter +1

The use of coarse graining to connect physical and information theoretic entropies has recently been given a precise formulation in terms of ``observational entropy'', describing e…

Non-Multiplicativity of the Holevo Barycenter of Quantum Channels

Composing p-adic qubits: from representations of SO(3)p​ to entanglement and universal quantum logic gates

Observational entropy of quantum correlations and entanglement

Composing $p$ -adic qubits: from representations of SO(3) $_{p}$ to entanglement and universal quantum logic gates