Discrimination of dephasing channels
Quantum Physics
2023-10-25 v2
Abstract
The problem of dephasing channel discrimination is addressed for finite-dimensional systems. In particular, the optimization with respect to input states without energy constraint is solved analytically for qubit, qutrit and ququart. Additionally, it is shown that resorting to side entanglement assisted strategy is completely useless in this case.
Cite
@article{arxiv.2201.00388,
title = {Discrimination of dephasing channels},
author = {Milajiguli Rexiti and Laleh Memarzadeh and Stefano Mancini},
journal= {arXiv preprint arXiv:2201.00388},
year = {2023}
}