Classical and Quantum Fisher Information in the Geometrical Formulation of Quantum Mechanics

Details Classical and Quantum Fisher Information in the Geometrical Formulation of Quantum Mechanics Classical and Quantum Fisher Information in the Geometrical Formulation of Quantum Mechanics

2010-09-27

arxiv.org/abs/1009.5219v1

Physics Letters A 374 (2010) 4801

Physics

Quantum Physics

8 pages

Scientific paper

10.1016/j.physleta.2010.10.005

The tomographic picture of quantum mechanics has brought the description of quantum states closer to that of classical probability and statistics. On the other hand, the geometrical formulation of quantum mechanics introduces a metric tensor and a symplectic tensor (Hermitian tensor) on the space of pure states. By putting these two aspects together, we show that the Fisher information metric, both classical and quantum, can be described by means of the Hermitian tensor on the manifold of pure states.

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