Minimal and Maximal Operator Spaces and Operator Systems in Entanglement Theory
We examine k-minimal and k-maximal operator spaces and operator systems, and investigate their relationships with the separability problem in quantum information theory. We show that the matrix norms that define the k-minimal operator spaces are equal to a family of norms that have been studied independently as a tool for detecting k-positive linear maps and bound entanglement. Similarly, we investigate the k-super minimal and k-super maximal operator systems that were recently introduced and show that their cones of positive elements are exactly the cones of k-block positive operators and (unnormalized) states with Schmidt number no greater than k, respectively. We characterize a class of norms on the k-super minimal operator systems and show that the completely bounded versions of these norms provide a criterion for testing the Schmidt number of a quantum state that generalizes the recently-developed separability criterion based on trace-contractive maps.
- Official publication from JFA
- Preprint from arXiv:1010.1432 [math.OA]
- Local preprint [pdf]
- Poster presentation [pdf]
- Poster presentation [zip of LaTeX files]
- Slideshow presentation [pdf]
- Published in Journal of Functional Analysis.
- N. Johnston, D. W. Kribs, V. I. Paulsen, and R. Pereira, Minimal and Maximal Operator Spaces and Operator Systems in Entanglement Theory. Journal of Functional Analysis 260 8, 2407–2423 (2011).