Fixed Space of Positive Trace-Preserving Super-Operators

Abstract

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.

18 pages

References in corpus (1)

• Experimental magic state distillation for fault-tolerant quantum computing