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arXiv · 1409.3688

A lower bound on the fidelity between two states in terms of their trace-distance and max-relative entropy

Lin Zhang·Kaifeng Bu·Junde Wu
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Abstract

Fidelity is a fundamental and ubiquitous concept in quantum information theory. Fuchs-van de Graaf's inequalities deal with bounding fidelity from above and below. In this paper, we give a lower bound on the quantum fidelity between two states in terms of their trace-norm distance and their max-relative entropy.

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Lin Zhang, Kaifeng Bu, Junde Wu. 2014-12-02. A lower bound on the fidelity between two states in terms of their trace-distance and max-relative entropy. https://doi.org/10.1080/03081087.2015.1057098

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