English

Completely positive classical structures and sequentializable quantum protocols

Quantum Physics 2012-10-03 v1

Abstract

We study classical structures in various categories of completely positive morphisms: on sets and relations, on cobordisms, on a free dagger compact category, and on Hilbert spaces. As an application, we prove that quantum maps with commuting Kraus operators can be sequentialized. Hence such protocols are precisely as robust under general dephasing noise when entangled as when sequential.

Keywords

Cite

@article{arxiv.1210.0616,
  title  = {Completely positive classical structures and sequentializable quantum protocols},
  author = {Chris Heunen and Sergio Boixo},
  journal= {arXiv preprint arXiv:1210.0616},
  year   = {2012}
}

Comments

In Proceedings QPL 2011, arXiv:1210.0298

R2 v1 2026-06-21T22:14:22.255Z