Fixed Space of Positive Trace-Preserving Super-Operators

Details Fixed Space of Positive Trace-Preserving Super-Operators Fixed Space of Positive Trace-Preserving Super-Operators

2011-06-17

arxiv.org/abs/1106.3380v2

Physics

Quantum Physics

18 pages

Scientific paper

We examine the fixed space of positive trace-preserving super-operators. We
describe a specific structure that this space must have and what the projection
onto it must look like. We show how these results, in turn, lead to an
alternative proof of the complete characterization of the fixed space of
completely positive trace-preserving super-operators.

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