Quantum coherence of Gaussian states

Daniela Buono; Gaetano Nocerino; Giuseppe Petrillo; Gianpaolo Torre; Giuseppe Zonzo; Fabrizio Illuminati

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arXiv · 1609.00913

Quantum coherence of Gaussian states

Daniela Buono·Gaetano Nocerino·Giuseppe Petrillo·Gianpaolo Torre·Giuseppe Zonzo·Fabrizio Illuminati

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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.

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Daniela Buono, Gaetano Nocerino, Giuseppe Petrillo, Gianpaolo Torre, Giuseppe Zonzo, Fabrizio Illuminati. 2016-09-04. Quantum coherence of Gaussian states. https://arxiv.org/abs/1609.00913

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