Geometric interpretation for A-fidelity and its relation with Bures fidelity

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dc.creatorMa, Zhihao
dc.creatorZhang, Fu-Lin
dc.creatorChen, Jing-Ling
dc.date2008-09-10
dc.date2008-12-30
dc.date.accessioned2026-07-07T12:22:32Z
dc.date.available2026-07-07T12:22:32Z
dc.descriptionA geometric interpretation for the A-fidelity between two states of a qubit system is presented, which leads to an upper bound of the Bures fidelity. The metrics defined based on the A-fidelity are studied by numerical method. An alternative generalization of the A-fidelity, which has the same geometric picture, to a $N$-state quantum system is also discussed.
dc.description4 pages, 1 figure. Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/0809.1786
dc.identifierhttp://arxiv.org/abs/0809.1786
dc.identifierPhys. Rev. A 78, 064305 (2008)
dc.identifierdoi:10.1103/PhysRevA.78.064305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213683
dc.subjectQuantum Physics
dc.titleGeometric interpretation for A-fidelity and its relation with Bures fidelity
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