On diagonal quantum channels
Quantum Physics
2021-08-25 v2
Abstract
In this paper we study diagonal quantum channels and their structure by proving some results and giving most applicable instances of them. Firstly, it is shown that action of every diagonal quantum channel on pure state from computational basis is a convex combination of pure states determined by some transition probabilities. Finally, by using the Cholesky decomposition it is presented an algorithmic method to find an explicit form for Kraus operators of diagonal quantum channels.
Cite
@article{arxiv.2011.00237,
title = {On diagonal quantum channels},
author = {Amir R. Arab},
journal= {arXiv preprint arXiv:2011.00237},
year = {2021}
}
Comments
11 pages, to appear in Rep. Math. Phys.- Journal- Elsevier