29 citations · 71 across the 4 of their papers we have counts for
4 papers
Commutator Relations Reveal Solvable Structures in Unambiguous State Discrimination
M. Kleinmann, H. Kampermann, Ph. Raynal +1
We present a criterion, based on three commutator relations, that allows to decide whether two self-adjoint matrices with non-overlapping support are simultaneously unitarily simil…
A Decomposition of Separable Werner States
R. G. Unanyan, H. Kampermann, D. Bruss
We derive an integral convex combination of product states for a range of separable Werner states. Our method consists of expanding the sought-after local density operators in term…
Physical Purification of Quantum States
M. Kleinmann, H. Kampermann, T. Meyer +1
We introduce the concept of a physical process that purifies a mixed quantum state, taken from a set of states, and investigate the conditions under which such a purification map e…
On the generalization of quantum state comparison
M. Kleinmann, H. Kampermann, D. Bruss
We investigate the unambiguous comparison of quantum states in a scenario that is more general than the one that was originally suggested by Barnett et al. First, we find the optim…