• Corpus ID: 222133411

# R\'enyi Entropy, Signed Probabilities, and the Qubit

@article{Brandenburger2020RenyiES,
title={R\'enyi Entropy, Signed Probabilities, and the Qubit},
author={Adam Brandenburger and Pierfrancesco La Mura and Stuart Zoble},
journal={arXiv: Quantum Physics},
year={2020}
}
• Published 5 October 2020
• Physics
• arXiv: Quantum Physics
The states of the qubit, the basic unit of quantum information, are $2\times2$ positive semi-definite Hermitian matrices with trace $1$. We characterize these states in terms of an entropic uncertainty principle formulated on an eight-point phase space.

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