Quantum capacity of a deformed bosonic dephasing channel
Quantum Physics
2022-11-17 v1 Mathematical Physics
math.MP
Optics
Abstract
In this paper, using the notion of nonlinear coherent states, we define a deformed bosonic dephasing channel modelling the impact of a Kerr medium on a quantum state, as it occurs, for instance, in quantum communication based on optical fibers. We show that, in certain regimes, the Kerr nonlinearity is able to compensate the dephasing. In addition, our studies reveal that the quantum capacity of the deformed bosonic dephasing channel can be greater than that of the undeformed, standard bosonic dephasing channel for certain nonlinearity parameters.
Keywords
Cite
@article{arxiv.2211.09012,
title = {Quantum capacity of a deformed bosonic dephasing channel},
author = {Shahram Dehdashti and Janis Notzel and Peter van Loock},
journal= {arXiv preprint arXiv:2211.09012},
year = {2022}
}