Quantum perfect correlations

Details Quantum perfect correlations Quantum perfect correlations

2005-01-16

arxiv.org/abs/quant-ph/0501081v2

Annals of Physics 321 (2006) 744-769

Physics

Quantum Physics

Latex, 31 pages. Typos are corrected in ver 2

Scientific paper

10.1016/j.aop.2005.08.007

The notion of perfect correlations between arbitrary observables, or more generally arbitrary POVMs, is introduced in the standard formulation of quantum mechanics, and characterized by several well-established statistical conditions. The transitivity of perfect correlations is proved to generally hold, and applied to a simple articulation for the failure of Hardy's nonlocality proof for maximally entangled states. The notion of perfect correlations between observables and POVMs is used for defining the notion of a precise measurement of a given observable in a given state. A longstanding misconception on the correlation made by the measuring interaction is resolved in the light of the new theory of quantum perfect correlations.

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