Quantum coherence of Gaussian states

Abstract

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.

7 pages, 7 figures

Cited by in corpus (2)

• Detecting and estimating coherence based on coherence witnesses
• Experimental demonstration of robustness of Gaussian quantum coherence