Multiplicativity of the maximal output 2-norm for depolarized Werner-Holevo channels
Quantum Physics
2009-12-03 v1
Abstract
We study the multiplicativity of the output 2-norm for depolarized Werner-Holevo channels and show that multiplicativity holds for a product of two identical channels in this class. Moreover, it shown that the depolarized Werner-Holevo channels do not satisfy the entrywise positivity condition introduced by C. King and M.B. Ruskai, which suggests that the main result is non-trivial.
Keywords
Cite
@article{arxiv.0707.1722,
title = {Multiplicativity of the maximal output 2-norm for depolarized Werner-Holevo channels},
author = {Spyridon Michalakis},
journal= {arXiv preprint arXiv:0707.1722},
year = {2009}
}
Comments
3 pages