Alexander Müller‐Hermes

most citedAll unital qubit channels are

4

-noisy operations

4 citations · 6 across the 2 of their papers we have counts for

collaborators

2 papers

math.OA2024★ 2 cited

Completely Bounded Norms of $k$ -positive Maps

Guillaume Aubrun, Kenneth R. Davidson, Alexander Müller-Hermes +2

Given an operator system $S$ , we define the parameters $r_{k} (S)$ (resp. $d_{k} (S)$ ) defined as the maximal value of the completely bounded norm of a unit…

quant-ph2018★ 4 cited

All unital qubit channels are $4$ -noisy operations

Alexander Müller-Hermes, Christopher Perry

We show that any unital qubit channel can be implemented by letting the input system interact unitarily with a $4$ -dimensional environment in the maximally mixed state and then tra…

Completely Bounded Norms of k-positive Maps

All unital qubit channels are 4-noisy operations

Completely Bounded Norms of $k$ -positive Maps

All unital qubit channels are $4$ -noisy operations