We introduce a geometric quantification of quantum coherence in single-mode Gaussian states and we investigate the behavior of distance measures as functions of different physical parameters. In the case of squeezed thermal states, we observe that re-quantization yields an effect of noise-enhanced quantum coherence for increasing thermal photon number.
@article{arxiv.1609.00913,
title = {Quantum coherence of Gaussian states},
author = {Daniela Buono and Gaetano Nocerino and Giuseppe Petrillo and Gianpaolo Torre and Giuseppe Zonzo and Fabrizio Illuminati},
journal= {arXiv preprint arXiv:1609.00913},
year = {2016}
}