Stronger Schrödinger-like Uncertainty Relations

Abstract

Uncertainty relation is one of the fundamental building blocks of quantum theory. Nevertheless, the traditional uncertainty relations do not fully capture the concept of incompatible observables. Here we present a stronger Schrödinger-like uncertainty relation, which is stronger than the relation recently derived by L. Maccone and A. K. Pati [Phys. Rev. Lett. 113 (2014) 260401]. Furthermore, we give an additive uncertainty relation which holds for three incompatible observables, which is stronger than the relation newly obtained by S. Kechrimparis and S. Weigert [Phys. Rev. A 90 (2014) 062118] and the simple extension of the Schrödinger uncertainty relation.

4 pages, 2 figures. minor corrections

References in corpus (5)

• Heisenberg's Uncertainty Principle
• Stronger uncertainty relations for the sum of variances
• Heisenberg Uncertainty Relation for Three Canonical Observables
• Implications and applications of the variance-based uncertainty equalities
• Comments on "Stronger Uncertainty Relations for All Incompatible Observables"

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