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quant-ph2020★ 2 cited
Geometric conditions for saturating the data processing inequality
Sam Cree, Jonathan Sorce
The data processing inequality (DPI) is a scalar inequality satisfied by distinguishability measures on density matrices. For some distinguishability measures, saturation of the sc…
quant-ph2020★ 4 cited
A fidelity measure for quantum states based on the matrix geometric mean
Sam Cree, Jamie Sikora
Uhlmann's fidelity function is one of the most widely used similarity measures in quantum theory. One definition of this function is that it is the minimum classical fidelity assoc…