Quantifying coherence of Gaussian states

2015/10/10 by Jianwei Xu · 2 citations
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1103/physreva.93.032111

published as Phys. Rev. A 93, 032111 (2016) · 6 pages,no figure

arxiv created 2015/10/10 · arxiv updated 2016/03/23

Abstract

Coherence arises from the superposition principle and plays a key role in quantum mechanics. Recently, Baumgratz et al. [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev. Lett. 113, 140401 (2014)] established a rigorous framework for quantifying the coherence of finite dimensional quantum states. In this work we provide a framework for quantifying the coherence of Gaussian states and explicitly give a coherence measure based on the relative entropy.

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