Heisenberg's uncertainty principle for simultaneous measurement of positive-operator-valued measures

Abstract

A limitation on simultaneous measurement of two arbitrary positive operator valued measures is discussed. In general, simultaneous measurement of two noncommutative observables is only approximately possible. Following Werner's formulation, we introduce a distance between observables to quantify an accuracy of measurement. We derive an inequality that relates the achievable accuracy with noncommutativity between two observables. As a byproduct a necessary condition for two positive operator valued measures to be simultaneously measurable is obtained.

arXiv comment7 pages, 1 figure. To appear in Phys. Rev. A

References in corpus (4)

• Heisenberg's Uncertainty Principle
• Uncertainty Relations for Noise and Disturbance in Generalized Quantum Measurements
• Universal joint-measurement uncertainty relation for error bars
• Generalized Landau-Pollak Uncertainty Relation

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