PT-symmetric photonic quantum systems with gain and loss do not exist
Quantum Physics
2018-08-01 v1 Optics
Abstract
We discuss the impact of gain and loss on the evolution of photonic quantum states and find that PT-symmetric quantum optics in gain/loss systems is not possible. Within the framework of macroscopic quantum electrodynamics we show that gain and loss are associated with non-compact and compact operator transformations, respectively. This implies a fundamentally different way in which quantum correlations between a quantum system and a reservoir are built up and destroyed.
Keywords
Cite
@article{arxiv.1805.10876,
title = {PT-symmetric photonic quantum systems with gain and loss do not exist},
author = {Stefan Scheel and Alexander Szameit},
journal= {arXiv preprint arXiv:1805.10876},
year = {2018}
}