An exact correspondence between the quantum Fisher information and the Bures metric
Quantum Physics
2019-10-21 v1
Abstract
The quantum information and the Bures metric are equivalent to each other, except at points where the rank of the density matrix changes. Here we show that by slightly modifying the definition of the Bures metric, the quantum information will be fully equivalent to the Bures metric without exception.
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Cite
@article{arxiv.1910.08473,
title = {An exact correspondence between the quantum Fisher information and the Bures metric},
author = {Sisi Zhou and Liang Jiang},
journal= {arXiv preprint arXiv:1910.08473},
year = {2019}
}
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5 pages