2023
DOI: 10.1088/1751-8121/ad1015
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Quantifying channel coherence via the norm distance

Mingfei Ye,
Yu Luo,
Yongming Li

Abstract: Quantifying the number of resources contained in a physical object has been one of the core topics in the resource theory of coherence. In this paper, we introduce the dynamical coherence measures based on a class of norms in the classical channel setting. It is proved that it satisfies faithfulness, decreases monotonically under the maximally incoherent superchannels, and is convex. Moreover, we show that it satisfies subadditivity under both the composition and tensor product of channels. Especially, the dia… Show more

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