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Perfect correlations between noncommuting observables

Masanao Ozawa
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Abstract

The problem as to when two noncommuting observables are considered to have the same value arises commonly, but shows a nontrivial difficulty. Here, an answer is given by establishing the notion of perfect correlations between noncommuting observables, and applied to obtain a criterion for precise measurements of a given observable in a given state.

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Masanao Ozawa. 2004-12-10. Perfect correlations between noncommuting observables. https://doi.org/10.1016/j.physleta.2004.12.003

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