Statistical Inference, Distinguishability of Quantum States, And Quantum Entanglement

Details Statistical Inference, Distinguishability of Quantum States, And Quantum Entanglement Statistical Inference, Distinguishability of Quantum States, And Quantum Entanglement

1997-03-15

arxiv.org/abs/quant-ph/9703025v2

Phys.Rev. A56 (1997) 4452

Physics

Quantum Physics

11 pages no figures, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.56.4452

We argue from the point of view of statistical inference that the quantum relative entropy is a good measure for distinguishing between two quantum states (or two classes of quantum states) described by density matrices. We extend this notion to describe the amount of entanglement between two quantum systems from a statistical point of view. Our measure is independent of the number of entangled systems and their dimensionality.

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